AP BIOLOGY

Detailed explanation-1: -Water has a high specific heat, meaning it takes more energy to increase the temperature of water compared to other substances.

Detailed explanation-2: -Water has the highest specific heat capacity of any liquid. Specific heat is defined as the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius. For water, this amount is one calorie, or 4.184 Joules.

Detailed explanation-3: -Water changes temperature easily. False. Unlike most substances, water expands when it freezes.

Detailed explanation-4: -As water cools, it contracts and decreases in volume. When water decreases in volume, it becomes more dense. For samples of water that have the same mass, warmer water is less dense and colder water is more dense.

Detailed explanation-5: -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.