1. Name:_____________________________________________________________
Period:____________ Date:________________
Phase Change Review
1. Which process requires water to gain 2260 7. How many Jules of heat energy are required
Joules of energy per gram? to raise the temperature of 6 grams of
1) vaporization 2) condensation copper from 100ºC to 150ºC?
3) melting 4) freezing 1) 209 2) 300
3) 5900 4) 11,400
2. How many Joules of energy does 1.0 gram
of water lose when it freezes? 8. Which material requires the least amount of
1) 4.18 J 2) 2.11 J energy to change its temperature 1ºC per
3) 334 J 4) 2260 J gram?
3. How many Joules of heat energy would be 1) iron 2) ice
3) water 4) lead
required to melt a 5-gram piece of ice at
0ºC? 9. A large amount of latent heat is absorbed by
1) 10.5 J 2) 334 J water during
3) 1670 J 4) 11500 J 1) evaporation 2) freezing
3) condensation 4) precipitation
4. How much energy is required to raise the
temperature of 5 grams of iron from -10ºC to 10. Land surfaces of Earth heat more rapidly
+30ºC? than water surfaces because
1) 9 J 2) 18 J 1) more energy from the Sun falls on land
3) 90 J 4) 167 J than on water
2) land has a lower specific heat than
5. What is the heat energy required to change
water
2 grams of liquid water at 100ºC to water
3) sunlight penetrates to greater depths in
vapor at 100ºC?
land than in water
1) 334 J 2) 668 J 4) less of Earth’s surface is covered by
3) 2260 J 4) 4520 J land than by water
6. If equal masses of water in various phases
(states) are compared, which phase will
contain the greatest amount of stored
energy (latent heat)?
1) solid ice 2) liquid water
3) water vapor
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