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17 clicker questions
1.
Clicker Questions Chapter 17: Change
of Phase © 2015 Pearson Education, Inc.
2.
When evaporation occurs
in a dish of water, the molecules left behind in the water a) are less energetic. b) have decreased average speeds. c) result in lowered temperature. d) All of these. © 2015 Pearson Education, Inc.
3.
When evaporation occurs
in a dish of water, the molecules left behind in the water a) are less energetic. b) have decreased average speeds. c) result in lowered temperature. d) All of these. © 2015 Pearson Education, Inc.
4.
When relatively slow-moving
molecules condense from the air, the temperature of the remaining air tends to a) remain unchanged. b) decrease. c) increase. d) spread out uniformly. © 2015 Pearson Education, Inc.
5.
When relatively slow-moving
molecules condense from the air, the temperature of the remaining air tends to a) remain unchanged. b) decrease. c) increase. d) spread out uniformly. Explanation: Removal of slow molecules results in a greater proportion of fast ones in the air. Of course, the fastest at any moment may become the slowest with the next hit, so we speak of average molecular speeds. © 2015 Pearson Education, Inc.
6.
Put a saucer
of water on your table. A process that then occurs is a) evaporation. b) condensation. c) Both of these. d) None of these. © 2015 Pearson Education, Inc.
7.
Put a saucer
of water on your table. A process that then occurs is a) evaporation. b) condensation. c) Both of these. d) None of these. Explanation: Both evaporation and condensation occur simultaneously—which rate is greater, if any, produces the net effect. © 2015 Pearson Education, Inc.
8.
When matter changes
phase directly from solid to gas, we call the process a) evaporation. b) condensation. c) sublimation. d) regelation. © 2015 Pearson Education, Inc.
9.
When matter changes
phase directly from solid to gas, we call the process a) evaporation. b) condensation. c) sublimation. d) regelation. © 2015 Pearson Education, Inc.
10.
We feel uncomfortable
on a muggy day because water molecules are a) evaporating from our moist bodies. b) condensing from our moist bodies. c) condensing from the atmosphere onto our bodies. d) preventing evaporation. © 2015 Pearson Education, Inc.
11.
We feel uncomfortable
on a muggy day because water molecules are a) evaporating from our moist bodies. b) condensing from our moist bodies. c) condensing from the atmosphere onto our bodies. d) preventing evaporation. © 2015 Pearson Education, Inc.
12.
The dew that
forms on a cold soda can when taken from a refrigerator is due to a) evaporation. b) condensation. c) sublimation. d) regelation. © 2015 Pearson Education, Inc.
13.
The dew that
forms on a cold soda can when taken from a refrigerator is due to a) evaporation. b) condensation. c) sublimation. d) regelation. © 2015 Pearson Education, Inc.
14.
When warm, moist
air blows over the Pacific Ocean and meets the cold waters off the coast of San Francisco, the result is a) fog. b) cloud cover. c) updrafts over the land. d) lowered humidity. © 2015 Pearson Education, Inc.
15.
When warm, moist
air blows over the Pacific Ocean and meets the cold waters off the coast of San Francisco, the result is a) fog. b) cloud cover. c) updrafts over the land. d) lowered humidity. © 2015 Pearson Education, Inc.
16.
The process of
boiling water tends to a) warm the water. b) cool the water. c) both warm and cool the water at the same time. d) have no effect on water's temperature. © 2015 Pearson Education, Inc.
17.
The process of
boiling water tends to a) warm the water. b) cool the water. c) both warm and cool the water at the same time. d) have no effect on water's temperature. © 2015 Pearson Education, Inc.
18.
Boiling and freezing
can occur at the same time when water is subjected to a) decreased temperatures. b) decreased atmospheric pressure. c) increased temperatures. d) increased atmospheric pressure. © 2015 Pearson Education, Inc.
19.
Boiling and freezing
can occur at the same time when water is subjected to a) decreased temperatures. b) decreased atmospheric pressure. c) increased temperatures. d) increased atmospheric pressure. Comment: This is shown in the chapter-opener photo of Ron Hipschman with the Water Freezer exhibit at the Exploratorium in San Francisco. © 2015 Pearson Education, Inc.
20.
Regelation occurs due
to water's a) high specific heat. b) open-structured ice crystals c) high rate of expansion. d) slight tendency to freeze when temperature is lowered. © 2015 Pearson Education, Inc.
21.
Regelation occurs due
to water's a) high specific heat. b) open-structured ice crystals c) high rate of expansion. d) slight tendency to freeze when temperature is lowered. © 2015 Pearson Education, Inc.
22.
The melting point
of a substance such as water is normally a) higher than the freezing point. b) lower than the freezing point. c) the same as the freezing point. d) unrelated to the freezing point. © 2015 Pearson Education, Inc.
23.
The melting point
of a substance such as water is normally a) higher than the freezing point. b) lower than the freezing point. c) the same as the freezing point. d) unrelated to the freezing point. Comment: Water freezes at 0ºC and ice melts at 0ºC. Likewise for the melting and freezing points of other substances. © 2015 Pearson Education, Inc.
24.
When salt is
introduced to water, the temperature at which freezing takes place is a) quite unaffected. b) lowered. c) increased. d) dependent on the shape of salt and ice crystals. © 2015 Pearson Education, Inc.
25.
When salt is
introduced to water, the temperature at which freezing takes place is a) quite unaffected. b) lowered. c) increased. d) dependent on the shape of salt and ice crystals. © 2015 Pearson Education, Inc.
26.
A common device
that transfers heat from one location to another is a) a refrigerator. b) a heat pump. c) an air conditioner. d) All of the above. © 2015 Pearson Education, Inc.
27.
A common device
that transfers heat from one location to another is a) a refrigerator. b) a heat pump. c) an air conditioner. d) All of the above. Explanation: Both a refrigerator and an air conditioner are heat pumps. © 2015 Pearson Education, Inc.
28.
When steam condenses
to water, energy is a) absorbed by the steam. b) released by the steam. c) conserved as the phase change occurs. d) changed to a different form. © 2015 Pearson Education, Inc.
29.
When steam condenses
to water, energy is a) absorbed by the steam. b) released by the steam. c) conserved as the phase change occurs. d) changed to a different form. © 2015 Pearson Education, Inc.
30.
When water turns
to ice, water molecules a) absorb energy. b) release energy. c) retain their energy. d) lose the quality of wetness. © 2015 Pearson Education, Inc.
31.
When water turns
to ice, water molecules a) absorb energy. b) release energy. c) retain their energy. d) lose the quality of wetness. © 2015 Pearson Education, Inc.
32.
When snow forms
in clouds, the surrounding air is a) cooled. b) warmed. c) Both. d) None of the above. © 2015 Pearson Education, Inc.
33.
When snow forms
in clouds, the surrounding air is a) cooled. b) warmed. c) Both. d) None of the above. Explanation: This is consistent with Figure 17.17, where the gas-to- solid phase change is in the direction of energy release. © 2015 Pearson Education, Inc.
34.
Steam burns are
much more damaging than burns from boiling water because steam a) has a higher temperature. b) contains more internal energy. c) is hotter. d) is gaseous. © 2015 Pearson Education, Inc.
35.
Steam burns are
much more damaging than burns from boiling water because steam a) has a higher temperature. b) contains more internal energy. c) is hotter. d) is gaseous. © 2015 Pearson Education, Inc.
36.
When ice changes
phase to become water, energy is a) absorbed. b) given off. c) unchanged. d) in effect multiplied. © 2015 Pearson Education, Inc.
37.
When ice changes
phase to become water, energy is a) absorbed. b) given off. c) unchanged. d) in effect multiplied. © 2015 Pearson Education, Inc.
38.
When a gas
changes phase to become a plasma, energy is a) absorbed. b) given off. c) unchanged. d) in effect multiplied. © 2015 Pearson Education, Inc.
39.
When a gas
changes phase to become a plasma, energy is a) absorbed. b) given off. c) unchanged. d) in effect multiplied. © 2015 Pearson Education, Inc.
40.
When a gas
changes phase to become a solid, energy is a) absorbed. b) given off. c) unchanged. d) in effect multiplied. © 2015 Pearson Education, Inc.
41.
When a gas
changes phase to become a solid, energy is a) absorbed. b) given off. c) unchanged. d) in effect multiplied. Comment: This occurs when snowflakes form in the air. © 2015 Pearson Education, Inc.
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