This document contains a series of multiple choice questions testing knowledge of states of matter concepts like boiling point, condensation, freezing point, melting point, vaporization, and how temperature and molecular motion relate to phase changes. The questions cover topics like what state of matter plasma exists in, factors that affect gas behavior, and identifying phase changes on temperature vs time graphs.

1. Taco Grande
• TEST TOMORROW
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2. The temperature at which a
liquid becomes a gas is the ____
point.
a. freezing c. condensation
b. boiling d. melting
boiling

3. Matter may be found in the
plasma state in ____.
a. blood c. rivers
b. livers d. lightning
lightning

4. The measure of the average
speed of the particles of a
substance is the ____.
a. temperature c. thermal
energy
b. heat d. kinetic energy
temperature

5. The freezing point of a substance
is ____ the melting point of the
same substance.
a. greater than
c. equal to
b. less than
d. unrelated to
equal to

6. Which of the following factors
does NOT affect the behavior of
a gas in a closed container?
a. the number of particles c.
the cohesive forces within
the gas
b. the average kinetic energy
d. the size of the container
the cohesive forces within the gas

7. In which of the following pairs of
characteristics of an element are the
temperatures the same?
a. boiling point and freezing point
b. condensation point and melting
point
c. freezing point and condensation
point
d. melting point and freezing point
boiling point and freezing point

8. A microwave oven can make water boil in a
couple of minutes. In which of these ways might
a microwave oven change the state of water?
a. by increasing the speed of the moving
water molecules
b. by causing the molecules of water to split
apart
c. by making heat flow into the water
d. by changing the condensation point of
water
by increasing the speed of the
moving water molecules

9. Which of the following will occur as the speed
of the molecules in a substance increases?
a. The substance will become cooler.
b. The substance will begin to take up less
space.
c. The force of attraction between the
molecules will decrease.
d. The force of attraction that draws objects
to Earth will increase.
the force of attraction between the
molecules will decrease.

10. Figure 5 shows how the
temperature of a substance
changed as it was heated. Which
segment of the graph indicates
that the substance was
undergoing a change of state?
a. A c. C
b. B d. D
B

11. Figure 5 shows how the
temperature of a substance changed
as it was heated. Suppose that the
substance was a liquid during the
time represented by segment A.
Which process was probably
occurring during the time
represented by segment B?
a.
cooling
c.
warming
b. condensation d.
vaporization
D

12. Figure 5 shows how the
temperature of a substance changed
as it was heated. Suppose that the
substance was a liquid during the
time represented by segment D.
Which process was probably
occurring during the time
represented by segment B?
a.
freezing c.
deposition
b. melting d. evaporation
B

13. Figure 7 shows the particles of a
substance. Which of the following
processes could be occurring?
a.
evaporation or condensation
c.
freezing or sublimation
b.
deposition or freezing d.
sublimation or deposition
a. evaporation or condensation

14. Figure 9 shows how the
temperature of a substance
changed over time. Which segment
represents a period of time when
the substance was changing from a
gas to a liquid?
a.
A
c.
C
b. B
d. D
B

15. Figure 9 above shows how the
temperature of a substance
changed over time. Which segment
of the graph line shows a period of
cooling?
a.
A only
c.
A and C
b. B only
d. B and D
A and C

16. Figure 9 above shows how the
temperature of a substance
changed over time. Which segment
of the graph represents a period of
time in which the substance was a
liquid?
a.
A
c.
C
b. B
d. D
C

17. Figure 9 above shows how the
temperature of a common
substance changed on Earth over
time. In which state will the
substance exist after the period of
time represented by segment D has
passed?
a.
gas c.
plasma
b. liquid
d. solid
D

18. Adding air to a balloon will cause the balloon to
inflate. Which of the following would cause the
inflated balloon to become larger?
a.
cooling the balloon c.
squeezing the
balloon
b. popping the balloon d. warming the
balloon
warming the balloon

19. The temperature at which water boils is
____________________.
the boiling point

20. The four states of matter are solid,
____________________, gas, and
____________________.
liquid, plasma

21. The change in state from a gas to a liquid is called
____________________.
condensation

22. The temperature at which ice changes into liquid
water is called its ____________________.
melting point

23. Vaporization is when a ____________________
changes into a ____________________.
liquid, gas