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[Click here](https://www.jove.com/v/10674/molar-mass-and-specific-heat-capacity) for the English version. ## Overview 물질의 비열용량(specific heat capacity)은 물질 1g을 1도 가열하는 데 필요한 에너지의 양을 말합니다. 물은 열용량이 높아 온도를 높이려면 많은 열이 필요합니다. 마찬가지로, 물은 온도가 내려가려면 많은 열을 잃어야 하기 때문에 한번 가열하면 천천히 냉각됩니다. 이에 비해 금속은 열용량이 낮으며 빠르게 가열되고 빠르게 냉각됩니다. 비열용량은 물질 1g의 온도를 섭씨 1도(1°C) 상승시키는 데 필요한 에너지의 양으로 정의 됩니다. 예를 들어 물 1g의 온도를 1°C 증가시키려면 열에너지 1칼로리가 필요합니다. 비열용량은 종종 그램, 섭씨 및 칼로리로 나타내지만 킬로그램, 켈빈(K), 줄(Joules) 등으로도 나타낼 수 있습니다. 물의 비열용량은 1칼로리/그램 °C, 또는 4186줄/킬로그램 K 입니다. 금은 비열용량 ~0.03 칼로리/그램 °C, 또는 129 줄/킬로그램 K로서, 금의 비열용량은 물의 비열용량보다 낮습니다. #### 실용적인 면면 물의 높은 열용량은 극단적인 환경 온도를 조절하는데 도움이 됩니다. 큰 수역 근처의 도시들은 일일기온과 계절기온의 변동이 적습니다. 낮에는 인근의 물이 열에너지를 흡수하여 주변 땅을 냉각시키고 밤에는 물이 열에너지를 방출하여 지역을 따뜻하게 유지합니다. 큰 수역에서 멀리 떨어진 마을들은 일일기온과 계절기온이 크게 변동하는 것을 경험할 수 있습니다. 모래와 바위는 열용량이 낮기 때문에 낮에는 빠르게 가열되어 밤에 빠르게 열을 방출합니다. 우주에선 물이 끓다가 얼어 붙습니다. 이런 현상은 부분적으로 물의 높은 열용량 때문에 발생합니다. 우주에서 물은 매우 낮은 압력 때문에 먼저 끓습니다. 그리고 이 기체 상태에선 수증기 분자간의 간격이 더 떨어지게 되고 우주의 매우 낮은 온도 때문에 열을 빠르게 잃을 수 있습니다. 그 결과 수증기가 결정으로 얼어 붙게 됩니다. ## Transcript 물질은 열 흡수가 달라서각각 구체적인 열용량을 소유하는데그것은 정의된 질량에 대하여 온도를 1도변화 시키는데 필요한 열 에너지의 측정치이다이 양을 칼로리라고 하기도 한다물은 부근의 암석보다 더 큰 비열을 갖는데, 그 이유는물의 몰 질량이사암의 실리콘보다 더 낮기 때문이다물은 그램당 분자수가 더 많기 때문에, 에너지를더 많이 흡수할 수 있고온도 변경에도 시간이 더 걸린다모래는 실리콘 분자 수가더 적어서 더 빨리 가열이 된다그래서, 물은 극단적인주위 환경을 잘 규제한다이를테면, 해변 지역은 낮에뜨거워지거나, 밤에 서늘해지는데 시간이 더 오래 걸린다인근의 물 영향이 없는 갇힌 장소는 따스해지고서늘해지는 일이 빠르기 때문에, 더 극단적인 온도가 나타난다 ## Explore More Videos [비열](https://app.jove.com/kr/search?query=%EB%B9%84%EC%97%B4) [열 에너지](https://app.jove.com/kr/search?query=%EC%97%B4+%EC%97%90%EB%84%88%EC%A7%80) [온도 변화](https://app.jove.com/kr/search?query=%EC%98%A8%EB%8F%84+%EB%B3%80%ED%99%94) [질량](https://app.jove.com/kr/search?query=%EC%A7%88%EB%9F%89) [물](https://app.jove.com/kr/search?query=%EB%AC%BC) [암석](https://app.jove.com/kr/search?query=%EC%95%94%EC%84%9D) [몰 질량](https://app.jove.com/kr/search?query=%EB%AA%B0+%EC%A7%88%EB%9F%89) [실리콘](https://app.jove.com/kr/search?query=%EC%8B%A4%EB%A6%AC%EC%BD%98) 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[Video]()[Quiz](https://app.jove.com/science-education/v/10674/molar-mass-and-specific-heat-capacity?trialstart=1&section=4&action=CREATE_QUIZ)  Specific Heat ## 2\.20: 비열 **68,131 Views** **01:16 min** March 11, 2019 Overview 물질의 비열용량(specific heat capacity)은 물질 1g을 1도 가열하는 데 필요한 에너지의 양을 말합니다. 물은 열용량이 높아 온도를 높이려면 많은 열이 필요합니다. 마찬가지로, 물은 온도가 내려가려면 많은 열을 잃어야 하기 때문에 한번 가열하면 천천히 냉각됩니다. 이에 비해 금속은 열용량이 낮으며 빠르게 가열되고 빠르게 냉각됩니다. 비열용량은 물질 1g의 온도를 섭씨 1도(1°C) 상승시키는 데 필요한 에너지의 양으로 정의 됩니다. 예를 들어 물 1g의 온도를 1°C 증가시키려면 열에너지 1칼로리가 필요합니다. 비열용량은 종종 그램, 섭씨 및 칼로리로 나타내지만 킬로그램, 켈빈(K), 줄(Joules) 등으로도 나타낼 수 있습니다. 물의 비열용량은 1칼로리/그램 °C, 또는 4186줄/킬로그램 K 입니다. 금은 비열용량 ~0.03 칼로리/그램 °C, 또는 129 줄/킬로그램 K로서, 금의 비열용량은 물의 비열용량보다 낮습니다. #### 실용적인 면면 물의 높은 열용량은 극단적인 환경 온도를 조절하는데 도움이 됩니다. 큰 수역 근처의 도시들은 일일기온과 계절기온의 변동이 적습니다. 낮에는 인근의 물이 열에너지를 흡수하여 주변 땅을 냉각시키고 밤에는 물이 열에너지를 방출하여 지역을 따뜻하게 유지합니다. 큰 수역에서 멀리 떨어진 마을들은 일일기온과 계절기온이 크게 변동하는 것을 경험할 수 있습니다. 모래와 바위는 열용량이 낮기 때문에 낮에는 빠르게 가열되어 밤에 빠르게 열을 방출합니다. 우주에선 물이 끓다가 얼어 붙습니다. 이런 현상은 부분적으로 물의 높은 열용량 때문에 발생합니다. 우주에서 물은 매우 낮은 압력 때문에 먼저 끓습니다. 그리고 이 기체 상태에선 수증기 분자간의 간격이 더 떨어지게 되고 우주의 매우 낮은 온도 때문에 열을 빠르게 잃을 수 있습니다. 그 결과 수증기가 결정으로 얼어 붙게 됩니다. Transcript 물질은 열 흡수가 달라서각각 구체적인 열용량을 소유하는데그것은 정의된 질량에 대하여 온도를 1도변화 시키는데 필요한 열 에너지의 측정치이다이 양을 칼로리라고 하기도 한다물은 부근의 암석보다 더 큰 비열을 갖는데, 그 이유는물의 몰 질량이사암의 실리콘보다 더 낮기 때문이다물은 그램당 분자수가 더 많기 때문에, 에너지를더 많이 흡수할 수 있고온도 변경에도 시간이 더 걸린다모래는 실리콘 분자 수가더 적어서 더 빨리 가열이 된다그래서, 물은 극단적인주위 환경을 잘 규제한다이를테면, 해변 지역은 낮에뜨거워지거나, 밤에 서늘해지는데 시간이 더 오래 걸린다인근의 물 영향이 없는 갇힌 장소는 따스해지고서늘해지는 일이 빠르기 때문에, 더 극단적인 온도가 나타난다