Cooling Curves (College)
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Cooling Curves
Use the cooling curve below to answer the questions that follow.

1.
Which of the following is represented by the cooling curve shown below?
- Changes in temperature over time in going from a gas to a liquid to a solid
- Changes in temperature over time in going from a solid to a liquid to a gas
- Changes in temperature over time involved in phase changes, only
- Changes in temperature over time involved in phases, only
2.
Which of the following exists at t=1 min?
- liquid
- solid
- gas
- melting
3.
Which of the following represents the temperature range involved in the solid phase?
- 150ºC-208ºC
- 140ºC
- 90ºC
- 50ºC-90ºC
4.
Which of the following is represented at time t=5 min?
- melting
- condensation
- evaporation
- freezing
5.
Which of the following phase changes would occur as an endothermic process during time t=2 min to time t=6 min?
- condensation
- evaporation
- freezing
- melting
6.
Which of the following exists at time t=13 minutes?
- The liquid phase, only
- The solid phase, only
- An equilibrium between the solid and the liquid phases
- None of the above
7.
Which of the following represents the temperature range involved in the liquid phase?
- 90ºC-150ºC
- 140ºC
- 90ºC
- 50ºC-90ºC
8.
Which of the following is represented at time t=13 min?
- gas
- liquid
- solid
- freezing
9.
During time t=5 min, kinetic energy , while potential energy .
10.
Identify the intervals during which the average kinetic energy is decreasing.
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