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[Skip to main content](https://www.khanacademy.org/test-prep/mcat/physical-processes#main-content) If you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains \*.kastatic.org and \*.kasandbox.org are unblocked. Explore Select a category to view its courses Search Donate [Log in](https://www.khanacademy.org/login?continue=%2Ftest-prep%2Fmcat%2Fphysical-processes)[Sign up](https://www.khanacademy.org/signup?continue=%2Ftest-prep%2Fmcat%2Fphysical-processes) [Search for courses, skills, and videos](https://www.khanacademy.org/search) ## Welcome to Khan Academy\! So we can give you the right tools, let us know if you're a... Learner Teacher Parent [MCAT15 units · 518 skills](https://www.khanacademy.org/test-prep/mcat) [Unit 1Welcome to the MCAT course](https://www.khanacademy.org/test-prep/mcat/x04f6bc56:welcome-to-the-mcat-course) [Unit 2Practice Passages: Biological and Biochemical Foundations of Living Systems](https://www.khanacademy.org/test-prep/mcat/biological-sciences-practice) [Unit 3Practice Passages: Chemical and Physical Foundations of Biological Systems](https://www.khanacademy.org/test-prep/mcat/physical-sciences-practice) [Unit 4Practice Passages: Psychological, Social, and Biological Foundations of Behavior](https://www.khanacademy.org/test-prep/mcat/social-sciences-practice) [Unit 5Practice Passages: Critical Analysis and Reasoning Skills (CARS)](https://www.khanacademy.org/test-prep/mcat/critical-analysis-and-reasoning-skills-practice-questions) [Unit 6Foundation 1: Biomolecules](https://www.khanacademy.org/test-prep/mcat/biomolecules) [Unit 7Foundation 2: Cells](https://www.khanacademy.org/test-prep/mcat/cells) [Unit 8Foundation 3: Organ systems](https://www.khanacademy.org/test-prep/mcat/organ-systems) [Unit 9Foundation 4: Physical processes](https://www.khanacademy.org/test-prep/mcat/physical-processes) [Unit 10Foundation 5: Chemical processes](https://www.khanacademy.org/test-prep/mcat/chemical-processes) [Unit 11Foundation 6: Processing the environment](https://www.khanacademy.org/test-prep/mcat/processing-the-environment) [Unit 12Foundation 7: Behavior](https://www.khanacademy.org/test-prep/mcat/behavior) [Unit 13Foundation 8: Individuals and society](https://www.khanacademy.org/test-prep/mcat/individuals-and-society) [Unit 14Foundation 9: Society and culture](https://www.khanacademy.org/test-prep/mcat/society-and-culture) [Unit 15Foundation 10: Social inequality](https://www.khanacademy.org/test-prep/mcat/social-inequality) 1. [Test prep](https://www.khanacademy.org/test-prep) 2. [MCAT](https://www.khanacademy.org/test-prep/mcat) # Unit 9: Foundation 4: Physical processes ## About this unit From designing a better MRI machine to understanding heartbeat regulation, physics and chemistry concepts are everywhere in medicine! Here you'll review some of the basics of physics and chemistry, including mechanics, optics, electricity and magnetism, periodicity, and chemical equations, as you prepare to show your physical science prowess on the MCAT. ## [Vectors and scalars](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/e/vectors-and-scalars-questions) ### Learn - [Intro to vectors and scalars (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/v/introduction-to-vectors-and-scalars) - [Visualizing vectors in 2 dimensions (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/v/vectors-and-scalars-in-2d-edited) - [Unit vector notation (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/v/unit-vector-notation) - [Unit vector notation (part 2) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/v/unit-vector-notation-part-2) ### Practice - [Vectors and scalars questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/e/vectors-and-scalars-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/vectors-and-scalars/e/vectors-and-scalars-questions) ## [Translational motion and calculations](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/speed-and-velocity-questions) ### Learn - [Calculating average speed and velocity edited (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/calculating-average-speed-and-velocity-edited) - [Solving for time (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/solving-for-time) - [Displacement from time and velocity example (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/displacement-from-time-and-velocity-example) - [Instantaneous speed and velocity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/instantaneous-speed-and-velocity) - [Acceleration: At a glance (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/a/acceleration-at-a-glance) - [Acceleration (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/acceleration) - [Airbus A380 take-off time (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/airbus-a380-take-off-time) - [Airbus A380 take-off distance (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/airbus-a380-take-off-distance) - [Why distance is area under velocity-time line (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/why-distance-is-area-under-velocity-time-line) - [Average velocity for constant acceleration (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/v/average-velocity-for-constant-acceleration) ### Practice - [Speed and velocity questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/speed-and-velocity-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/speed-and-velocity-questions) - [Acceleration questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/acceleration-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/acceleration-questions) - [Mini MCAT passage: Swine flu in Finland](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/vectors-and-scalers---passage-1) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/vectors-and-scalers---passage-1) - [Mini MCAT passage: Concussions in professional athletes](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/acceleration---passage-1) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/acceleration---passage-1) - [MCAT training passage: DNA motion in gel electrophoresis](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/dna-motion-in-gel-electrophoresis-) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/speed-and-velocity/e/dna-motion-in-gel-electrophoresis-) ## [Force and Newton's laws of motion](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/newton-s-laws-and-equilibrium-questions) ### Learn - [Newton's first law of motion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/newton-s-first-law-of-motion) - [Applying Newton's first law of motion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/newton-s-first-law-of-motion-concepts) - [Newton's second law of motion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/newton-s-second-law-of-motion) - [Unbalanced forces and motion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/unbalanced-forces-and-motion) - [Newton's third law of motion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/newton-s-third-law-of-motion) - [Center of mass (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/center-of-mass) - [Introduction to torque (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/v/introduction-to-torque) ### Practice - [Newton's laws and equilibrium questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/newton-s-laws-and-equilibrium-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/newton-s-laws-and-equilibrium-questions) - [Mini MCAT passage: Comparing stress exerted by different running shoes](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/comparing-the-stress-exerted-on-the-body-by-different-running-shoes) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/comparing-the-stress-exerted-on-the-body-by-different-running-shoes) - [Mini MCAT passage: A physical model of human sitting](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/a-physical-model-of-human-sitting) 4 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/a-physical-model-of-human-sitting) - [Mini MCAT passage: Effects of microgravity on muscle tissues](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/the-effects-of-microgravity-on-muscle-tissues) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:newtons-laws-and-force/e/the-effects-of-microgravity-on-muscle-tissues) ## [Vector analysis and forces acting on an object](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/normal-forces-questions) ### Learn - [Balanced and unbalanced forces (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/balanced-and-unbalanced-forces) - [Normal force and contact force (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/normal-force-and-contact-force) - [Normal force in an elevator (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/normal-force-in-an-elevator) - [Slow sock on Lubricon VI (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/slow-sock-on-lubricon-vi) - [Normal forces on Lubricon VI (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/normal-forces-on-lubricon-vi) - [Inclined plane force components (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/inclined-plane-force-components) - [Ice accelerating down an incline (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/ice-accelerating-down-an-incline) - [Force of friction keeping the block stationary (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/force-of-friction-keeping-the-block-stationary-edited) - [Correction to force of friction keeping the block stationary (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/correction-of-force-of-friction-keeping-the-block-stationary) - [Force of friction keeping velocity constant (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/force-of-friction-keeping-velocity-constant-edited) - [Introduction to tension (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/introduction-to-tension) - [Introduction to tension (part 2) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/tension-part-2) - [Tension in an accelerating system and pie in the face (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/tension-in-an-accelerating-system-and-pie-in-the-face) - [Intuition on static and kinetic friction comparisons (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/intuition-on-static-and-kinetic-friction-comparisons) - [Static and kinetic friction example (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/v/static-and-kinetic-friction-example) ### Practice - [Normal forces questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/normal-forces-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/normal-forces-questions) - [Force of tension questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/force-of-tension-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/force-of-tension-questions) - [Forces on inclined planes questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/forces-on-inclined-planes-Zheng) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/forces-on-inclined-planes-Zheng) - [Mini MCAT passage: A ramp in an administrative office](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/forces-on-inclined-planes) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/forces-on-inclined-planes) - [Mini MCAT passage: Testing new suture material](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/testing-new-suture-material) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/testing-new-suture-material) - [Mini MCAT passage: Frictionless pulley system](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/force-of-tension---passage-1) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/force-of-tension---passage-1) - [Mini MCAT passage: Hills, inclement weather, and cars](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/forces-on-inclined-planes---passage-2) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/forces-on-inclined-planes---passage-2) - [Mini MCAT passage: Frictional forces on mobility walkers](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/normal-forces---passage-1) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/x04f6bc56:vector-analysis-and-applications/e/normal-forces---passage-1) ## [Work and energy](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/e/work-and-energy-questions) ### Learn - [Introduction to work and energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/introduction-to-work-and-energy) - [Work and energy (part 2) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/work-and-energy-part-2) - [Work and the work-energy theorem (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/work-and-the-work-energy-principle) - [Work as the transfer of energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/work-as-the-transfer-of-energy) - [Work example problems (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/work-example-problems) - [Work can be negative! (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/a/work-can-be-negative) - [Conservation of energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/conservation-of-energy-2) - [Work/energy problem with friction (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/work-energy-problem-with-friction) - [Intro to springs and Hooke's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/intro-to-springs-and-hooke-s-law) - [Potential energy stored in a spring (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/potential-energy-stored-in-a-spring) - [Spring potential energy example (mistake in math) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/spring-potential-energy-example-mistake-in-math) - [Conservative forces (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/conservative-forces) - [Power (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/power) - [Introduction to mechanical advantage (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/v/introduction-to-mechanical-advantage) ### Practice - [Work and energy questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/e/work-and-energy-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/e/work-and-energy-questions) - [Mini MCAT passage: The forearm as a third-class lever](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/e/the-forearm-as-an-example-of-a-third-class-lever) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/work-and-energy-mcat/e/the-forearm-as-an-example-of-a-third-class-lever) ## [Fluids at rest](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/e/fluids-at-rest-questions) ### Learn - [The buoyant force does not get smaller as you sink (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/a/the-buoyant-force-does-not-get-smaller-as-you-sink) - [Pressure and Pascal's principle (part 1) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/fluids-part-1) - [Pressure and Pascal's principle (part 2) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/fluids-part-2) - [Pressure at a depth in a fluid (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/fluids-part-3) - [Finding height of fluid in a barometer (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/fluids-part-4) - [Archimedes principle and buoyant force (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/fluids-part-5) - [Buoyant force example problems edited (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/buoyant-force-example-problems-edited) - [Specific gravity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/v/specific-gravity) ### Practice - [Fluids at rest questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/e/fluids-at-rest-questions) 8 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-at-rest/e/fluids-at-rest-questions) ## [Fluids in motion](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/e/fluids-in-motion-questions) ### Learn - [Volume flow rate and equation of continuity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/fluids-part-7) - [Bernoulli's equation derivation part 1 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/fluids-part-8) - [Bernoulli's equation derivation part 2 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/fluids-part-9) - [Finding fluid speed exiting hole (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/fluids-part-10) - [More on finding fluid speed from hole (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/fluids-part-11) - [Finding flow rate from Bernoulli's equation (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/fluids-part-12) - [Viscosity and Poiseuille flow (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/viscosity-and-poiseuille-flow) - [Turbulence at high velocities and Reynold's number (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/turbulence-at-high-velocities-and-reynolds-number) - [Surface Tension and Adhesion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/surface-tension-and-adhesion) - [Venturi effect and Pitot tubes (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/venturi-effect-and-pitot-tubes) - [Two circulations in the body (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/two-circulations-in-the-body) - [Arteries vs. veins - what's the difference? (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/arteries-vs-veins-what-s-the-difference) - [Resistance in a tube (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/resistance-in-a-tube) - [Putting it all together: Pressure, flow, and resistance (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/v/putting-it-all-together-pressure-flow-and-resistance) ### Practice - [Fluids in motion questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/e/fluids-in-motion-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/e/fluids-in-motion-questions) - [Mini MCAT passage: The tubular system in an aquarium](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/e/fluids-in-motion--passage-1) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/fluids-in-motion/e/fluids-in-motion--passage-1) ## [Gas phase](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase-questions) ### Learn - [Absolute temperature and the kelvin scale (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/absolute-temperature-and-the-kelvin-scale) - [Pressure and the simple mercury barometer (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/pressure-and-the-simple-mercury-barometer) - [Definition of an ideal gas, ideal gas law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/dideal-gas-law) - [Derivation of gas constants using molar volume and STP (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/derivation-of-gas-constants-using-molar-volume-and-stp) - [Boyle's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/boyles-law) - [Charles's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/charles-law) - [Avogadro's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/avogadros-law) - [The van der Waals equation (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/van-der-waals-equation) - [Partial pressure (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/v/partial-pressure-2) ### Practice - [Gas phase questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase-questions) - [Mini MCAT passage: Charles' law and gas in a piston](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase---passage-2) 4 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase---passage-2) - [Mini MCAT passage: Deviation from ideal gas behavior](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase---passage-1) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/gas-phase/e/gas-phase---passage-1) ## [Kinetic molecular theory of gases](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/gas-phase-quiz) ### Learn - [Boltzmann's constant (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/v/boltzmanns-constant) - [Heat capacity at constant volume and pressure (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/v/heat-capacity-at-constant-volume-and-pressure) - [Kinetic molecular theory of gases (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/v/kinetic-molecular-theory-of-gases) ### Practice - [Gas phase quiz](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/gas-phase-quiz) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/gas-phase-quiz) - [Mini MCAT passage: Ideal gases in medicine](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/the-kinetic-properties-of-ideal-gases) 4 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/the-kinetic-properties-of-ideal-gases) - [Mini MCAT passage: Heat engines and work](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/gas-in-a-canister-with-a-piston) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/kinetic-molecular-theory-of-gas/e/gas-in-a-canister-with-a-piston) ## [Electrostatics](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/e/electrostatics-questions) ### Learn - [Triboelectric effect and charge (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/triboelectric-effect-and-charge) - [Coulomb's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/coulombs-law) - [Conservation of charge (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/conservation-of-charge) - [Conductors and insulators (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/conductors-and-insulators) - [Electric field (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/electrostatics-part-2) - [Electric potential (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/a/electric-potential) - [Electric potential energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/electric-potential-energy) - [Voltage (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/voltage) - [Electric potential at a point in space (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/v/electric-potential-at-a-point-in-space) ### Practice - [Electrostatics questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/e/electrostatics-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/electrostatics-1/e/electrostatics-questions) ## [Current and resistance](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/e/current-and-resistance-questions) ### Learn - [Current and resistance (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/a/do-electrons-move-rapidly-through-direct-current-circuits) - [Ohm's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/circuits-part-1) - [Resistors in series (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/circuits-part-2) - [Resistors in parallel (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/circuits-part-3) - [Example: Analyzing a more complex resistor circuit (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/circuits-part-4) - [Resistivity and conductivity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/resistivity-and-conductivity) - [Electrolytic conductivity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/electrolytic-conductivity) - [Voltmeters and ammeters (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/v/voltmeters-and-ammeters) ### Practice - [Current and resistance questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/e/current-and-resistance-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/current-and-resistance/e/current-and-resistance-questions) ## [Capacitors](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/capacitors-questions) ### Learn - [Capacitors article (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/a/capacitors-article) - [Dielectrics article (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/a/dielectric-article) - [Capacitors and capacitance (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/v/capacitors-and-capacitance) - [Capacitance (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/v/capacitance) - [Energy of a capacitor (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/v/energy-capacitor) - [Capacitors in series (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/v/capacitors-series) - [Capacitors in parallel (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/v/capacitors-parallel) - [Dielectrics in capacitors (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/v/dielectrics-capacitors) ### Practice - [Capacitors questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/capacitors-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/capacitors-questions) - [Mini MCAT passage: Electromyography and passive filters](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/electromyography-and-passive-filters--circuitry-in-action) 4 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/electromyography-and-passive-filters--circuitry-in-action) - [Mini MCAT passage: Cardiac dysrhythmia and defibrillators](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/capacitors---passage-2) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/capacitors/e/capacitors---passage-2) ## [Magnetism](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/a/using-the-right-hand-rule) ### Learn - [Using the Right-Hand Rule (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/a/using-the-right-hand-rule) - [Magnetism - Part 1 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/v/magnetism-part-1) - [Magnetism - Part 2 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/v/magnetism-part-2) - [Magnetism - Part 3 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/v/magnetism-part-3) - [Magnetism - Part 4 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/v/magnetism-part-4) ### Practice - [Magnetism questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/e/magnetism-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/magnetism-mcat/e/magnetism-questions) ## [Electrochemistry](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/e/electrochemistry-questions) ### Learn - [Electrochemistry (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/a/electrochemistry) - [Redox reaction from dissolving zinc in copper sulfate (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/redox-reaction-from-dissolving-zinc-in-copper-sulfate) - [Introduction to galvanic/voltaic cells (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/galvanic-cell-voltaic-cell) - [Electrodes and voltage of Galvanic cell (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/electrodes-and-voltage-of-galvanic-cell) - [Shorthand notation for galvanic/voltaic cells (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/shorthand-notation-for-galvanicvoltaic-cells) - [Free energy and cell potential (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/free-energy-and-cell-potential-edited) - [Standard reduction potentials (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/standard-reduction-potentials) - [Voltage as an intensive property (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/voltage-as-an-intensive-property-edited) - [Using reduction potentials (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/using-reduction-potentials) - [Spontaneity and redox reactions (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/spontaneity-and-redox-reactions) - [Standard cell potential and the equilibrium constant (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/standard-cell-potential-and-the-equilibrium-constant-edited) - [Calculating the equilibrium constant from the standard cell potential edited (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/calculating-the-equilibrium-constant-from-the-standard-cell-potential-edited) - [Nernst equation (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/nerst-equation-edited) - [Using the Nernst equation (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/using-the-nernst-equation) - [Concentration cell (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/concentration-cell-edited) - [Introduction to electrolysis (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/introduction-to-electrolysis) - [Quantitative electrolysis (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/quantiative-electrolysis-edited) - [Electrolysis of molten sodium chloride edited (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/electrolysis-of-molten-sodium-chloride-edited) - [Lead storage battery (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/lead-storage-battery) - [Nickel-cadmium battery (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/v/nickel-cadmium-battery) ### Practice - [Electrochemistry questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/e/electrochemistry-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/intro-electrochemistry-mcat/e/electrochemistry-questions) ## [Sound](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/e/sound-questions-2) ### Learn - [Sound is a longitudinal wave (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/a/sound-is-a-longitudinal-wave) - [Production of sound (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/production-of-sound) - [Sound properties: amplitude, period, frequency, wavelength (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/sound-properties-amplitude-period-frequency-wavelength) - [Speed of sound (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/speed-of-sound) - [Relative speed of sound in solids, liquids, and gases (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/relative-speed-of-sound-in-solids-liquids-and-gases) - [Decibel Scale (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/decibel-scale) - [Why do sounds get softer? (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/why-do-sounds-get-softer) - [Ultrasound medical imaging (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/ultrasound-medical-imaging) - [Standing waves in open tubes (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/standing-waves-in-tubes-part-1) - [Standing waves in closed tubes (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/standing-waves-in-tubes-part-2) - [Doppler effect introduction (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/introduction-to-the-doppler-effect) - [Doppler effect formula for observed frequency (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/doppler-effect-formula-for-observed-frequency) - [Doppler effect formula when source is moving away (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/doppler-effect-formula-when-source-is-moving-away) - [When the source and the wave move at the same velocity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/when-the-source-and-the-wave-move-at-the-same-velocity) - [Doppler effect for a moving observer (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/doppler-effect-for-a-moving-observer) - [Doppler effect: reflection off a moving object (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/v/doppler-effect-reflection-off-a-moving-object) ### Practice - [Sound questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/e/sound-questions-2) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/sound/e/sound-questions-2) ## [Light and electromagnetic radiation](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/e/light-and-electromagnetic-radiation-questions) ### Learn - [Electromagnetic waves and the electromagnetic spectrum (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/electromagnetic-waves-and-the-electromagnetic-spectrum) - [Polarization of light (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/polarization-of-light-linear-and-circular) - [Diffraction and constructive and destructive interference (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/a/diffraction-and-constructive-and-destructive-interference) - [Wave interference (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/wave-interference) - [Young's double slit introduction (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/youngs-double-split-part-1) - [Young's double slit equation (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/youngs-double-slit-part-2) - [Young's double slit problem solving (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/youngs-double-slit-problem-solving) - [Diffraction grating (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/diffraction-grating) - [Single slit interference (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/single-slit-interference) - [More on single slit interference (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/more-on-single-slit-interference) - [Thin film interference (part 1) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/thin-film-interference-part-1) - [Thin film interference (part 2) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/thin-film-interference-part-2) - [Photon energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/v/photon-energy) ### Practice - [Light and electromagnetic radiation questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/e/light-and-electromagnetic-radiation-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/light-and-electromagnetic-radiation-questions/e/light-and-electromagnetic-radiation-questions) ## [Infrared and Ultraviolet/Visible spectroscopy](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/e/infrared-and-ultraviolet-visible-spectroscopy-questions) ### Learn - [Introduction to infrared spectroscopy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/introduction-to-infrared-spectroscopy) - [Bonds as springs (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/bonds-as-springs) - [Signal characteristics - wavenumber (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/signal-characteristics-wave-number) - [IR spectra for hydrocarbons (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/ir-spectra-for-hydrocarbons) - [Signal characteristics - intensity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/signal-characteristics-intensity) - [Signal characteristics - shape (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/signal-characteristics-shape) - [Symmetric and asymmetric stretching (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/symmetric-and-asymmetric-stretching) - [IR signals for carbonyl compounds (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/ir-signals-for-carbonyl-compounds) - [IR spectra practice (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/ir-spectra-practice) - [UV/Vis spectroscopy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/uv-vis-spectroscopy) - [Absorption in the visible region (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/absorption-in-the-visible-region) - [Conjugation and color (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/v/conjugation-and-color-1) ### Practice - [Infrared and Ultraviolet/Visible spectroscopy questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/e/infrared-and-ultraviolet-visible-spectroscopy-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/infrared-and-ultraviolet-visible-spectroscopy/e/infrared-and-ultraviolet-visible-spectroscopy-questions) ## [Proton nuclear magnetic resonance](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/e/proton-nuclear-magnetic-resonance-questions) ### Learn - [Magnetic resonance imaging (MRI) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/a/magnetic-resonance-imaging-mri) - [Introduction to proton NMR (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/introduction-to-proton-nmr) - [Nuclear shielding (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/nuclear-shielding) - [Chemical equivalence (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/chemical-equivalence) - [Chemical shift (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/chemical-shift) - [Electronegativity and chemical shift (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/electronegativity-and-chemical-shift) - [Diamagnetic anisotropy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/diamagnetic-anisotropy) - [Integration (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/integration) - [Spin-spin splitting (coupling) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/spin-spin-splitting-coupling) - [Multiplicity: n + 1 rule (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/multiplicity-n-1-rule) - [Coupling constant (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/coupling-constant) - [Complex splitting (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/complex-splitting) - [Hydrogen deficiency index (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/hydrogen-deficiency-index) - [Proton NMR practice 1 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/proton-nmr-practice-1) - [Proton NMR practice 2 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/proton-nmr-practice-2) - [Proton NMR practice 3 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/v/proton-nmr-practice-3) ### Practice - [Proton nuclear magnetic resonance questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/e/proton-nuclear-magnetic-resonance-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/proton-nuclear-magnetic-resonance/e/proton-nuclear-magnetic-resonance-questions) ## [Thin lenses](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/e/thin-lenses-questions) ### Learn - [Thin lens sign conventions (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/a/thin-lens-sign-conventions) - [Convex lenses (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/convex-lenses) - [Convex lens examples (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/convex-lens-examples) - [Concave lenses (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/concave-lenses) - [Object image and focal distance relationship (proof of formula) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/object-image-and-focal-distance-relationship-proof-of-formula) - [Object image height and distance relationship (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/object-image-height-and-distance-relationship) - [Thin lens equation and problem solving (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/thin-lens-equation-and-problem-solving) - [Multiple lens systems (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/multiple-lens-systems) - [Diopters, Aberration, and the Human Eye (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/v/diopters-aberration-and-the-human-eye) ### Practice - [Thin lenses questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/e/thin-lenses-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/thin-lenses/e/thin-lenses-questions) ## [Spherical mirrors](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/e/spherical-mirrors-questions) ### Learn - [Virtual image (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/v/virtual-image) - [Parabolic mirrors and real images (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/v/parabolic-mirrors-and-real-images) - [Parabolic mirrors 2 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/v/parabolic-mirrors-2) - [Convex parabolic mirrors (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/v/convex-parabolic-mirrors) - ["Objects in the mirror are ..." actually images in the mirror (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/a/objects-in-the-mirror-are-actually-images-in-the-mirror) ### Practice - [Spherical mirrors questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/e/spherical-mirrors-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/spherical-mirrors/e/spherical-mirrors-questions) ## [Reflection and refraction](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/e/reflection-and-refraction) ### Learn - [Refraction and light bending (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/a/refraction-and-light-bending) - [Specular and diffuse reflection (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/specular-and-diffuse-reflection) - [Specular and diffuse reflection 2 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/specular-and-diffuse-reflection-2) - [Refraction and Snell's law (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/refraction-and-snell-s-law) - [Refraction in water (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/refraction-in-water) - [Snell's law example 1 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/snells-law-example-1-edited) - [Snell's law example 2 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/snells-law-example-2-edited) - [Total internal reflection (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/total-internal-reflection-edited) - [Dispersion (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/v/dispersion) ### Practice - [Reflection and refraction questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/e/reflection-and-refraction) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/reflection-and-refraction/e/reflection-and-refraction) ## [Atomic nucleus](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/e/atomic-nucleus-questions) ### Learn - [Radioactive decay types article (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/a/radioactive-decay-types-article) - [Decay graphs and half lives article (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/a/decay-graphs-and-half-lives-article) - [Atomic number, mass number, and isotopes (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/atomic-number-mass-number-and-isotopes) - [Atomic mass (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/atomic-mass-2) - [Mass defect and binding energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/mass-defect-and-binding-energy-edited) - [Nuclear stability and nuclear equations (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/nuclear-stability-and-nuclear-equations) - [Writing nuclear equations for alpha, beta, and gamma decay (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/alpha-beta-and-gamma-decay) - [Types of decay (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/types-of-decay) - [Half-life and carbon dating (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/half-life) - [Half-life plot (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/half-life-of-radioactive-isotopes) - [Exponential decay formula proof (can skip, involves calculus) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/exponential-decay-formula-proof-can-skip-involves-calculus) - [Introduction to exponential decay (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/introduction-to-exponential-decay-edited) - [Exponential decay and semi-log plots (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/exponential-decay-and-semi-log-plots) - [More exponential decay examples (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/exponential-decay-examples-edited) - [Mass spectrometer (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/v/mass-spectrometer) ### Practice - [Atomic nucleus questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/e/atomic-nucleus-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/e/atomic-nucleus-questions) - [Mini MCAT passage: Therapeutic radioisotopes](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/e/characteristics-of-various-therapeutic-radioisotopes-) 5 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/atomic-nucleus/e/characteristics-of-various-therapeutic-radioisotopes-) ## [Electronic structure](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/e/electronic-structure-quiz) ### Learn - [Photoelectric effect (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/photoelectric-effect) - [Bohr model radii (derivation using physics) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/bohr-model-radii-derivation-using-physics) - [Bohr model radii (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/bohr-model-radii) - [Bohr model energy levels (derivation using physics) (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/bohr-model-energy-levels-derivation-using-physics) - [Bohr model energy levels (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/bohr-model-energy-levels) - [Absorption and emission (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/absorption-and-emission) - [Emission spectrum of hydrogen (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/emission-spectrum-of-hydrogen-edited) - [Heisenberg uncertainty principle (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/heisenberg-uncertainty-principle-edited) - [Quantum numbers (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/quantum-numbers) - [Quantum numbers for the first four shells (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/quantum-numbers-for-the-first-four-shells) - [Electron configurations for the first period (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/electron-configurations-for-the-first-period) - [Electron configurations for the second period (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/electron-configurations-for-the-second-period) - [Electron configurations for the third and fourth periods (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/electron-configurations-for-the-third-and-fourth-periods) - [Electron configurations of the 3d transition metals (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/electron-configurations-in-the-3d-orbitals) - [Paramagnetism and diamagnetism (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/v/paramagnetism-and-diamagnetism) - [Electron configurations article (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/a/electron-configurations-article) ### Practice - [Electronic structure questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/e/electronic-structure-quiz) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/electronic-structure/e/electronic-structure-quiz) ## [Periodic table](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/e/periodic-table-questions) ### Learn - [Electronegativity and bonding (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/electronegativity-and-chemical-bonds) - [The periodic table (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/periodic-table-introduction) - [The periodic table - transition metals (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/periodic-table-transition-metals) - [Counting valence electrons for main group elements (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/periodic-table-valence-electrons) - [Atomic and ionic radii (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/atomic-and-ionic-radii) - [Ionization energy: group trend (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/group-trend-for-ionization-energy) - [Ionization energy: period trend (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/period-trend-for-ionization-energy) - [First and second ionization energy (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/first-and-second-ionization-energy) - [Electron affinity: period trend (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/v/electron-affinity) ### Practice - [Periodic table questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/e/periodic-table-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/periodic-table-of-elements/e/periodic-table-questions) ## [Stoichiometry](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/e/stoichiometry-questions) ### Learn - [Stoichiometry article (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/a/stoichiometry-article) - [Stoichiometry and empirical formulae (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/a/stoichiometry-and-empirical-formulae) - [Empirical formula from mass composition edited (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/empirical-formula-from-mass-composition-edited) - [Molecular and empirical formulas (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/molecular-and-empirical-formulas-edited) - [The mole and Avogadro's number (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/the-mole-and-avogadro-s-number) - [Stoichiometry example problem 1 (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/stoichiometry-example-problem-1-edited) - [Stoichiometry (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/stoichiometry-edited) - [Limiting reactant example problem 1 edited (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/limiting-reactant-example-problem-1-edited) - [Specific gravity (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/v/specific-gravity) ### Practice - [Stoichiometry questions](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/e/stoichiometry-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/stoichiometry/e/stoichiometry-questions) ## [Balancing chemical equations](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/e/balancing_chemical_equations) ### Learn - [Balancing chemical equations (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/v/balancing-chemical-equations-introduction) - [Balancing more complex chemical equations (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/v/balancing-more-complex-chemical-equation) - [Visually understanding balancing chemical equations (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/v/visually-understanding-balancing-chemical-equations) - [Balancing another combustion reaction (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/v/balancing-another-combustion-reaction) - [Balancing chemical equation with substitution (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/v/balancing-chemical-equation-with-substitution) - [Balancing Chemical Equations Intuition (Opens a modal)](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/pi/balancing-chemical-equations-intuition) ### Practice - [Balancing chemical equations 1](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/e/balancing_chemical_equations) 4 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/e/balancing_chemical_equations) - [Balancing chemical equations 2](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/e/balancing-chemical-equations-questions) 10 questions [Practice](https://www.khanacademy.org/test-prep/mcat/physical-processes/copy-of-balancing-chemical-equations/e/balancing-chemical-equations-questions) ## [Redox reactions](https://www.khanacademy.org/test-prep/mcat/physical-processes/redox-reactions/e/redox-reactions-questions) ### Learn - 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## About this unit From designing a better MRI machine to understanding heartbeat regulation, physics and chemistry concepts are everywhere in medicine! Here you'll review some of the basics of physics and chemistry, including mechanics, optics, electricity and magnetism, periodicity, and chemical equations, as you prepare to show your physical science prowess on the MCAT.