Question

7. The evaporation of water cools the surroundings, and the condensation of this vapor
   1. Does nothing
   2. Warms the surroundings
   3. Increases the value of the latent heat of vaporization
   4. Decreases the value of the latent heat of vaporization

8. The heat involved in the change of phase form solid ice to liquid water is
   1. Latent heat of vaporization
   2. Latent heat of fusion
   3. Latent heat of condensation
   4. None of the above
9. More molecules are returning to the liquid state than are leaving the liquid state. This process is called
   1. Boiling
   2. Freezing
   3. Condensation
   4. Melting
10. The temperature of a gas is proportional to the
    1. Average velocity of the gas molecules
    2. Internal potential energy of the gas
    3. Number of gas molecules in a sample
    4. Average kinetic energy of the gas molecules
11. The specific heat of soil is 0.2 cal/g⁰C, and the specific heat of water is 1 cal/g⁰C. This means that if 1 kg of soil and 1 kg of water each receives 1 kcal of energy, ideally,
    1. The water will be warmer than the soil by 0.8 ⁰C
    2. The soil will be 4 ⁰C warmer than the water
    3. The soil will be 5 ⁰C warmer than the water
    4. The water will warm by 1 ⁰C, and the soil will warm by 0.2 ⁰C
12. Styrofoam is a good insulating material because
    1. It is a plastic material that conducts heat poorly
    2. It contains many tiny pockets of air
    3. Of the structure of the molecules that make it up
    4. It is not very dense
13. As a solid undergoes a phase change to a liquid, it
    1. Releases heat while remaining at a constant temperature
    2. Absorbs heat while remaining at a constant temperature
    3. Releases heat as the temperature decreases
    4. Absorbs heat as the temperature increases
14. Which of the following contains the most heat
    1. A bucket of water at 0⁰C
    2. A barrel of water at 0⁰C
    3. Neither contains ay heat since the temperature is zero
    4. Both have the same amount of heat
15. Conduction best takes place in a
    1. Solid
    2. Fluid
    3. Gas
    4. Vacuum
16. Convection best takes place in a(an)
    1. Solid
    2. Fluid
    3. alloy
    4. Vacuum
17. The phase change from ice to liquid water takes place at
    1. Constant pressure
    2. Constant temperature
    3. Constant volume
    4. All of the above
18. Which of the following has the greatest value for liquid water?
    1. Latent heat of vaporization
    2. Latent heat of fusion
    3. Both are equivalent
    4. None of the above is correct

Answer 1