OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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adhesion
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cohesion
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high heat capacity
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surface tension
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Detailed explanation-1: -Some substances heat up quickly, while other substances heat up slowly. Water is one of the latter-it has a high specific heat capacity because it requires more energy to raise the temperature. Water has a specific heat capacity of 4182 J/kg°C.
Detailed explanation-2: -Water has a high specific heat capacity-it absorbs a lot of heat before it begins to get hot.
Detailed explanation-3: -Because of its high heat capacity, water can minimize changes in temperature. For instance, the specific heat capacity of water is about five times greater than that of sand. The land cools faster than the sea once the sun goes down, and the slow-cooling water can release heat to nearby land during the night.
Detailed explanation-4: -Water’s high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely. When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy.
Detailed explanation-5: -Heat capacity is related to a substance’s ability to retain heat and the rate at which it will heat up or cool. For example, a substance with a low heat capacity, such as iron, will heat and cool quickly, while a substance with a high heat capacity, such as water, heats and cools slowly.