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Phase Change Mastery Check

Total questions: 50

Worksheet time: 33mins

Name
Class
Date
1.

Suppose you pour a glass of ice water and set it on the kitchen table. After a few minutes, the outside of the glass will be covered with drops of water. Why did this happen?

a)

Oxygen in the air cooled and condensed onto the cold glass.

b)

Water vapor in the air cooled and condensed onto the cold glass.

c)

Water vapor in the air cooled and evaporated onto the cold glass.

d)

Water seeped through pores in the glass.

2.

A substance is able to flow freely within a container. What state of matter is the substance in?

a)

Liquid

b)

Gas

c)

Solid

d)

Plasma

3.

What are the characteristics of a solid?

a)

Solids do not have a definite shape but have a definite volume

b)

Solids have a definite shape and no definite volume

c)

Solids do not have a definite shape and no definite volume

d)

Solids have a definite shape and definite volume

4.

When heat is added to a liquid, what occurs?

a)

Liquid molecules begin to condense to form a solid.

b)

Liquid molecules are being slowed down to become a gas.

c)

Liquid molecules speed up and begin to spread out to become a gas.

d)

Liquid molecules begin to slow down to become a solid.

5.

What happens to molecules as temperature and energy increase?

a)

Matter condenses

b)

Substances expand when heated

c)

Atoms become less active

d)

Phase change slows down

6.

When heat energy and temperature are at their lowest, what state of matter is a substance in?

a)

Gas

b)

Vapor

c)

Solid

d)

Liquid

7.

When a gas begins to condense through condensation, what happens to the heat in the particles.

a)

The heat leaves the gas as it condenses.

b)

The heat goes into the gas as it condenses.

c)

The heat stays the same as it condenses.

d)

None of the above.

8.

When a gas begins to condense through condensation, what happens to the heat in the particles.

a)

The heat leaves the gas as it condenses.

b)

The heat goes into the gas as it condenses.

c)

The heat stays the same as it condenses.

d)

None of the above.

9.
What is the phase change of a solid to a liquid?
a)
freezing
b)
melting
c)
boiling
d)
condensation
10.
All changes in the state of matter of a substance requires
a)
vibration
b)
water
c)
permission
d)
energy
11.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
12.

Between which two points is the solid cooling?

a)

A <---- B

b)

B <----> C

c)

C <---- D

d)

D <----> E

e)

E <---- F

13.

Between which two points is the gas heating up?

a)

A ----> B

b)

B <---- C

c)

C ----> D

d)

D ----> E

e)

E ----> F

14.

Between which two points is the gas condensing?

a)

A <---- B

b)

B <---- C

c)

C <---- D

d)

D <---- E

e)

E <---- F

15.
Between which points is the temperature of the substance remaining constant?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
16.
A substance's heating curve is shown in the graph.  What is its boiling point?
a)
100 C
b)
60 C
c)
80 C
d)
20 C
17.
The graph shows a cooling curve for an unknown substance.  What is happening during segment DE?
a)
boiling
b)
condensation
c)
freezing
d)
melting
18.
In which segment is the kinetic energy remaining constant?
a)
A-B
b)
B-C
c)
C-D
d)
E-F
19.
This curve indicates what about the heat energy?
a)
heat energy is being added or absorbed
b)
heat energy is being removed
20.

What is happening to the particles in the substance between points A and B?

a)

Melting

b)

Freezing

c)

Speeding Up

d)

Slowing Down

21.

Where on the graph are phase changes taking place?

a)

1

b)

2

c)

3

d)

4

e)

5

22.
Boiling is ...
a)
liquid to gas
b)
gas to solid
c)
gas to liquid
d)
solid to liquid
23.
What is sublimation?
a)
phase change between solid and liquid
b)
pahse change from gas to solid
c)
phase change from solid to gas
d)
phase change from solid to solid
24.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
25.
In a solid, the particles
a)
vibrate in place
b)
slide past one another
c)
overcome the strong attraction
26.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
27.

Is the substance gaining or losing energy?

a)

Gaining

b)

Losing

28.

Are the particles moving faster or slower as time goes on?

a)

Faster

b)

Slower

29.

What state/phase is the object likely from points A to B?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

30.

What is happening to the particles in the substance between points A and B?

a)

Melting

b)

Freezing

c)

Speeding Up

d)

Slowing Down

31.

What is happening to the particles in the substance between points D and E?

a)

Melting

b)

Freezing

c)

Vaporizing

d)

Sublimating

32.

Is the substance gaining or losing energy?

a)

Gaining

b)

Losing

33.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
34.

The drops of water that appear on the outside of a glass of cold juice on a warm day are an example of?

a)

sublimation

b)

condensation

c)

evaporation

35.

Your teacher asks your group to discuss molecule MOVEMENT and molecule ARRANGEMENT in a SOLID. Each of your group members shares their answer. Decide who has the BEST answer.

a)

Betsy says molecule MOVEMENT in a SOLID is SLOW and the molecule ARRANGEMENT is FAR APART.

b)

Yazmin says molecules DO NOT MOVE in a SOLID and the molecule ARRANGEMENT is CLOSE.

c)

Leila says molecule MOVEMENT in a SOLID is SLOW and the molecule ARRANGEMENT is CLOSE.

36.

Your teacher asks your group to discuss HOW molecule MOVEMENT and molecule ARRANGEMENT in a LIQUID is DIFFERENT than in a SOLID. Each of your group members shares their answer. Decide who has the BEST answer.

a)

Zachary says molecule MOVEMENT in a LIQUID is SLOWER and the molecule ARRANGEMENT is FARTHER APART than a SOLID.

b)

Miguel says molecule MOVEMENT in a LIQUID is SLOWER and the molecule ARRANGEMENT is CLOSER than a SOLID.

c)

Julian says molecule MOVEMENT in a LIQUID is FASTER and the molecule ARRANGEMENT is FARTHER APART than a SOLID.

37.

Your teacher asks your group to discuss HOW molecule MOVEMENT and molecule ARRANGEMENT in a GAS is DIFFERENT than in a LIQUID. Each of your group members shares their answer. Decide who has the BEST answer.

a)

Villette says molecule MOVEMENT in a GAS is FASTER and the molecule ARRANGEMENT is FARTHER APART than a LIQUID.

b)

Vivian says molecule MOVEMENT in a GAS is SLOWER and the molecule ARRANGEMENT is FARTHER APART than a LIQUID.

c)

Griselda says molecule MOVEMENT in a GAS is FASTER and the molecule ARRANGEMENT is CLOSER than a LIQUID.

38.
state of matter that has a fixed volume and a fixed shape
a)
solid
b)
liquid
c)
gas
d)
phases of matter
39.
a state of matter that has a definite volume but no definite shape
a)
solid
b)
liquid
c)
gas
d)
phases
40.
a state of matter that has no definite shape or volume
a)
solid
b)
liquid
c)
gas
d)
phases
41.
In which phase of matter are the particles the least dense or compact?
a)
solid
b)
liquid
c)
gas
d)
phase change
42.
In which phase of matter are the particles close together and vibrating just a little?
a)
solid
b)
liquid
c)
gas
d)
physical property
43.
In which phase of matter are the particles farthest apart and moving fast?
a)
solid
b)
liquid
c)
gas
d)
phase changes
44.
In which phase of matter are the particles sliding past each other and a bit further apart?
a)
solid
b)
liquid
c)
gas
d)
phase changes
45.

What happens at the vaporization point (boiling point) of a substance?

a)

a substance changes from liquid to gas

b)

a substance changes from gas to solid

c)

a substance changes from solid to gas

46.

In this state of matter, the particles of the substance are closely packed together and they don't move around freely.

a)

gas

b)

solid

c)

liquid

47.
What does this picture represent? 
a)
solid
b)
liquid
c)
gas
d)
plasma
48.
When thermal energy is added to a substance, the substance's particles move:
a)
More rapidly at an increased diestance from each other.
b)
More rapidly with less distance between each other.
c)
More slowly with a greater distance between each other.
d)
More slowly with a reduced distance between each other.
49.

A plasma can be made in a laboratory by

a)

cooling a gas to very low temperatures

b)

cooling a gas and reducing the pressure

c)

heating a gas to extremely hot temperatures

d)

heating a liquid to the point it turns into a gas

50.

Is Lightning a Solid, Liquid, Gas, or Plasma?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

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