BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It requires a great amount of energy for the hydrogen bonds among water molecules to break.
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The hydrogen bonds among water molecules break easily when the temperature increases.
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Small changes in thermal energy affect water drastically.
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Temperature changes in water happen so quickly that we cannot observe them.
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Detailed explanation-1: -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-2: -Which statement correctly describes the reason for the high specific heat of water? Water has unusually strong hydrogen bonding. These bonds require extra energy to break. Therefore, water has a high specific heat.
Detailed explanation-3: -Water’s high surface tension is due to the hydrogen bonding in water molecules. Water also has an exceptionally high heat of vaporization. Vaporization occurs when a liquid changes to a gas, which makes it an endothermic reaction.
Detailed explanation-4: -Which statement describes the effect of water’s heat capacity? Water warms up faster than land does and cools down faster.