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Lesson 2.2 Test Prep
Test Description: KMT and Phase Changes
Instructions: Answer all questions to get your test result.
1) The melting point of water is
A
32 degrees Celsius
B
100 degrees Celsius
C
0 degrees Celsius
D
212 degrees Celsius
2) The freezing point of water is ____
A
32 degrees Celsius
B
0 degrees Celsius
C
212 degrees Celsius
D
100 degrees Celsius
3) Which of the following is the best explanation of condensation?
A
Condensation occurs when the particles gain energy to become a gas
B
Condensation occurs when the temperature of a substance drops to 50 degrees Celsius
C
Condensation occurs when the particles slow enough to take a fixed position
D
Condensation occurs when the particles of a substance lose energy and clump together
4) Particles in which phase have the greatest thermal energy?
A
Solid
B
Gas
C
Liquid
5) The particles in which phase of matter have the least energy?
A
Gas
B
Solid
C
Liquid
6) During melting, which is true of the spacing of the particles?
A
They move further apart
B
They move closer together
C
They keep the same spacing
7) During condensation, which is true about the spacing of the particles?
A
They move further apart
B
They move closer together
C
They keep the same spacing
8) During freezing, which is true about the spacing of the particles?
A
They keep the same spacing
B
They move closer together
C
They move further apart
9) During evaporation, which is true about the spacing of the particles?
A
They keep the same spacing
B
They move further apart
C
They move closer together
10) When a gas condenses, the energy of the particles...
A
stays the same
B
increases
C
decreases
11) When a solid melts, the energy of the particles...
A
stays the same
B
increases
C
decreases
12) When a liquid evaporates, the energy of the particles...
A
increases
B
stays the same
C
decreases
13) When a substance freezes, the energy of the particles
A
increases
B
stays the same
C
decreases
14) When a substance evaporates, the energy of the particles...
A
increases
B
decreases
C
stays the same
15) When a substance sublimates, the energy of the particles...
A
stays the same
B
increases
C
decreases
16) Particles slow down and move into fixed positions during which kind of phase change?
A
evaporation
B
condensation
C
melting
D
freezing
17) During which phase change do the particles gain enough energy to spread out?
A
evaporation
B
freezing
C
condensation
D
melting
18) Particles overcome attractions and spread apart in which kind of phase change?
A
freezing
B
condensation
C
evaporation
D
melting
19) What happens to the temperature of a substance as it melts?
A
The temperature decreases
B
The temperature doesn't change
C
The temperature increases
20) What happens to a substance's temperature as it evaporates?
A
It decreases
B
It increases
C
It doesn't change
*select an answer for all questions
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