Course

Introductory Biology

Study Pack

Set 3 Water And Life

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Question 1

(Multiple Choice)

Free
A dietary Calorie equals 1 kilocalorie. Which of the following statements correctly defines 1 kilocalorie?

A) 1,000 calories, or the amount of heat required to raise the temperature of 1 g of water by 1,000°C
B) 100 calories, or the amount of heat required to raise the temperature of 100 g of water by 1°C
C) 10,000 calories, or the amount of heat required to raise the temperature of 1 kg of water by 1°F
D) 1,000 calories, or the amount of heat required to raise the temperature of 1 kg of water by 1°C
E) 1,000 calories, or the amount of heat required to raise the temperature of 100 g of water by 100°C

Answer

Question 2

(Multiple Choice)

Free
Temperature usually increases when water condenses. Which behavior of water is most directly responsible for this phenomenon?

A) the change in density when it condenses to form a liquid or solid
B) reactions with other atmospheric compounds
C) the release of heat by the formation of hydrogen bonds
D) the release of heat by the breaking of hydrogen bonds
E) the high surface tension of water

Answer

Question 3

(Multiple Choice)

Free
Liquid water's high specific heat is mainly a consequence of the

A) small size of the water molecules.
B) high specific heat of oxygen and hydrogen atoms.
C) absorption and release of heat when hydrogen bonds break and form.
D) fact that water is a poor heat conductor.
E) higher density of liquid water than solid water (ice).

Answer