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WorksheetsPhases and Phase Changes
Total questions: 50
Worksheet time: 29mins
Name
Class
Date
1.
The phase of matter with a definite volume but indefinite shape is a
a)
solid
b)
liquid
c)
gas
2.
The phase of matter with a definite shape and volume is a
a)
solid
b)
liquid
c)
gas
3.
Gases have a...
a)
definite shape and volume
b)
indefinite shape and volume
c)
definite shape and indefinite volume
4.
The phase of matter in which the atoms are moving the fastest is
a)
solid
b)
liquid
c)
gas
5.
What best describes the motion of atoms in a solid?
a)
vibrating slowly in place
b)
sliding past each other
c)
moving rapidly in all directions
6.
Adding heat energy causes the atoms to...
a)
move slower
b)
move faster
c)
get bigger
d)
get smaller
7.
Removing heat energy (cooling) causes the atoms to
a)
spread apart
b)
move closer together
c)
get larger
d)
get smaller
8.
Which phase of matter is represented by the atoms in this diagram?
a)
solid
b)
liquid
c)
gas
9.
Which phase of matter is represented by the atoms in this diagram?
a)
solid
b)
liquid
c)
gas
10.
The water droplets on this glass of water is showing the following phase change
a)
melting
b)
evaporation
c)
freezing
d)
condensation
11.
The water leaving the ocean in the water cycle is representing this phase change
a)
melting
b)
evaporation
c)
freezing
d)
condensation
12.
What phase change is represented by the dry ice in this picture?
a)
evaporation
b)
condensation
c)
sublimation
d)
melting
13.
What two phase changes require heat energy to be absorbed?
a)
melting and freezing
b)
melting and boiling
c)
freezing and boiling
d)
freezing and condensation
14.
What phase change occurs due to a release of heat energy?
a)
melting
b)
condensation
c)
evaporation
d)
boiling
15.
What section of the phase change graph would you find a solid being heated?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
16.
What section of the phase change graph would you find a liquid being heated?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
17.
What section of the phase change graph would you find a gas being heated?
a)
A-B
b)
C-D
c)
D-E
d)
E-F
18.
According to this graph, what is the melting point temperature of this substance? (in degrees)
a)
40
b)
70
c)
100
d)
140
19.
According to this graph, what is the boiling point temperature of this substance? (in degrees)
a)
40
b)
70
c)
100
d)
140
20.
What section of the phase change graph would you find a solid being heated?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
21.
What section of the phase change graph would you find a solid being heated?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
22.
What section of the phase change graph would you find a liquid being heated?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
23.
What happens to the temperature while a substance is changing phase?
a)
increases
b)
decreases
c)
stays the same
24.
According to this graph, what is the boiling point temperature of this substance? (in degrees)
a)
40
b)
70
c)
100
d)
140
25.
According to this graph, what is the melting point temperature of this substance? (in degrees)
a)
40
b)
70
c)
100
d)
140
26.
What section of the phase change graph would you find a gas being heated?
a)
A-B
b)
C-D
c)
D-E
d)
E-F
27.
What section of the phase change graph would you find a liquid being heated?
a)
A-B
b)
B-C
c)
C-D
d)
D-E
28.
What phase change occurs due to a release of heat energy?
a)
melting
b)
condensation
c)
evaporation
d)
boiling
29.
Segment B?
a)
solid
b)
liquid
c)
freezing
d)
melting
30.
Segment D?
a)
gas
b)
liquid
c)
boiling
d)
melting
31.
Segment E?
a)
gas
b)
liquid
c)
boiling
d)
melting
32.
During a phase change, the temperature remains the same
a)
True
b)
False
33.
What kind of energy is added to or removed from matter to cause a phase change?
a)
Radiation
b)
Thermal
c)
Solar
d)
Wind
34.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
35.
When a substance changes from a gas to a liquid it is called
a)
Evaporation
b)
Condensation
c)
Freezing
d)
Melting
36.
When a puddle of water dries up this process is called
a)
Condensation
b)
Evaporation
c)
Melting
d)
Transpiration
37.
The main difference between amorphous and crystalline solids is:
a)
One has definite shape, the other has definite volume.
b)
One has a pattern, the other does not.
c)
A crystalline solid example is glass.
d)
An amorphous solid example is sugar.
38.
True or false: liquids take on the shape of their container.
a)
True.
b)
False.
39.
A wet shirt is put on a clothesline to dry on a sunny day. The shirt dries because water molecules
a)
gain heat energy and condense
b)
gain heat energy and evaporate
c)
lose heat energy and condense
d)
lose heat energy and evaporate
40.
During which phase is heat energy absorbed by a substance?
a)
liquid to gas
b)
gas to solid
c)
liquid to solid
d)
gas to liquid
41.
What happens to particle movement/speed when energy is added to a phase?
a)
Particles slow down
b)
Particles go faster
c)
Particles don't move
d)
Particles stay the same speed
42.
Which of these phase changes does NOT involve changing liquid to a gas?
a)
sublimation
b)
evaporation
c)
vaporization
d)
boiling
43.
Liquids particles are ______________.
a)
Loosely packed
b)
Tightly packed
c)
Far apart
44.
What happens to particles of a substances when heat energy is taken away?
a)
particles speed up and move closer
b)
particles slow down and move apart
c)
particles slow down and move closer
d)
particles speed up and move apart
45.
What happens to the particles of matter when a substance freezes?
a)
particles speed up and move closer
b)
particles slow down and move apart
c)
particles slow down and move closer
d)
particles speed up and move apart
46.
a change of state when a solid becomes a liquid
a)
freezing
b)
condensation
c)
boiling
d)
melting
47.
a change of state when a gas becomes a liquid
a)
melting
b)
freezing
c)
condensation
d)
boiling
48.
What phase change can happen if enough heat energy is added to a solid?
a)
it melts
b)
it freezes
c)
it condenses
d)
particles slow down
49.
What causes phase changes?
a)
adding or taking away particles
b)
adding or taking away matter
c)
adding or taking away heat energy
d)
adding or taking away physical properties
50.
What phase change occurs when matter goes from gas to a solid?
a)
Melting
b)
Condensation
c)
Deposition
d)
Sublimation
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