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WorksheetsPhase Change Review
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
What is between the particles of water in a glass of pure water?
a)
Nothing
b)
Water
c)
Air
2.
Name the process in which a liquid changes to a solid.
a)
Melting
b)
Freezing
c)
Condensing
d)
Evaporating
3.
Name the process in which a solid changes to a liquid.
a)
Freezing
b)
Melting
c)
Condensing
d)
Evaporating
4.
Name the process in which a gas changes to a liquid.
a)
Freezing
b)
Melting
c)
Condensing
d)
Evaporating
5.
Name the process in which a liquid changes into gas.
a)
Freezing
b)
Melting
c)
Condensing
d)
Evaporating
6.
What causes a solid to melt?
a)
An increase of kinetic energy.
b)
A decrease of kinetic energy.
c)
Pieces break off the substance.
d)
Pieces are added to the substance.
7.
What causes a substance to dissolve?
a)
An increase of kinetic energy.
b)
A decrease of kinetic energy.
c)
Pieces breaking off a substance.
d)
Pieces are added to a substance.
8.
What is the freezing point of the Lauric Acid?
a)
45 degrees
b)
60 degrees
c)
30 degrees
d)
38 degrees
9.
What is happening between 2 minutes and 7 minutes?
a)
The Lauric Acid is freezing.
b)
The Lauric Acid has reached equilibrium.
c)
The Lauric Acid is getting colder.
d)
The Lauric Acid is getting warmer.
10.
What happened at 8 minutes?
a)
All the Lauric Acid had frozen.
b)
The Lauric Acid reached its freezing point.
c)
The Lauric Acid reached equilibrium.
d)
The Lauric Acid melted.
11.
How can you tell when a system has reached equilibrium?
a)
All substances are the same temperature.
b)
All substances are liquids.
c)
All substances are at 0 degrees C.
d)
All substances have evaporated.
12.
The melting/freezing point of mercury is –39ºC. Don put liquid mercury into a room that was kept at a constant temperature of –30ºC. Will the mercury freeze?
a)
Yes
b)
No
c)
Maybe
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