1. An object gains 30. J of heat and warms from 25ᵒC to 40.ᵒC. Calculate the heat capacity of the
object. correct answers 2.0 J/OC
2. How does a solute change the freezing point of a liquid? correct answers temperature
decreases
3. According to the second law of thermodynamics, what property do natural processes tend to
increase? correct answers entropy
4. The heating of a metal patio chair in the sun exibits what kind of energy transfer? correct
answers radiation
5. What is the relationship between work and energy? correct answers Energy is measured by the
amount of work that it can do.
6. What type of potential energy is caused by restorative forces? correct answers elastic potential
energy
7. What is the relationship between vapor pressure and the temperature of a liquid? correct
answers As temperature decreases, vapor pressure decreases.
8. changes in which of the following properties drive a convection current? correct answers
density
9. What is the temperature at which vapor pressure equals atmospheric pressure? correct answers
boiling point
10. Why is heat of vaporization much greater than heat of fusion? correct answers The cohesion
of molecules must be completely overcome.
, 11. How does the volume of liquid water change as water is cooled from 4ᵒC to OᵒC? correct
answers Volume increases.
12. What scientific idea is the first law of thermodynamics a practical restatement of? correct
answers law of conservation of energy
13. What is the amount of heat needed to cause a unit rise in the temperature of a unit mass of a
substance correct answers specific heat
14. What is the amount of heat needed to change an object's temperature by a certain amount?
correct answers heat capacity
15. What is the general term for "hidden" heat absorbed or released when a substance undergoes
a change in state? correct answers latent heat
16. What is the amount of heat required to change a given amount of a liquid into a gas without a
temperature change? correct answers heat of vaporization
17. What is the amount of heat required to change a given amount of a solid into a liquid without
a temperature change? correct answers heat of fusion
18. Which state of matter exists when temperatures are too high for matter to exist in its ordinary
states? correct answers plasma
19. What type of heat transfer causes the handle of a pot of boiling water to become hot? correct
answers conduction
20. What is the name for a double-walled container with a vacuum separating the walls? correct
answers Dewar flask