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5.7 Matter phases and changes

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.
When Greg took a hot shower, he noticed that the bathroom was filled with steam. Which statement best explains what happened?
a)
The heat pulled steam into the bathroom from outside.
b)
The air in the room changed to steam as it warmed up.
c)
Water and air were mixed and sprayed into the bathroom together.
d)
Many small particles of water went into the air in the bathroom.
2.
Kurt had two similar soccer balls. One of them had a hole in it. Kurt pushed one side of that ball in. Then he put the ball on his head and wore it as a hat. Kurt tried to do the same thing with the other soccer ball, but he could not change the shape of that ball. Why was Kurt not able to change the second ball's shape?
a)
The second ball did not have any air in it.
b)
The second ball was full of small particles.
c)
The second ball absorbed matter from the air around it.
d)
The second ball was solid all the way through.
3.
Mandy sprinkled a little bit of salt into a glass of water. She stirred the water until she no longer could see the salt. When she took a sip of the water, she found that it tasted salty. Why did the water taste salty?
a)
The salt's taste stayed around even after the salt had gone away.
b)
Some of the water particles turned into pieces of salt.
c)
Salt particles too small to see were mixed into the water.
d)
The salty taste was transferred from the salt to the water.
4.
Four students in a class made models of air. Their models are shown below. Which student's model best describes air?
a)
Pablo
b)
Isabella
c)
Steve
d)
Susan
5.
Water vapor is part of the air. Air can spread out to fill any space. So, for example, there is water vapor in the air everywhere within a classroom. What event turns water vapor into a liquid?
a)
freezing
b)
evaporation
c)
melting
d)
condensation
6.
A teacher places water in a pot. The pot with water is then placed on a hot stove until it boils. What will happen to the water as it boils?
a)
It will become a solid.
b)
It will freeze.
c)
It will condense.
d)
It will become a gas.
7.
A candle is made of wax. When the candle is lit, the candle wax drips down the side of the candle. The picture shows the candle lit for seven minutes. What happens to the candle wax when it gets hot?
a)
It condenses.
b)
It becomes a liquid.
c)
It turns to air.
d)
It becomes water.
8.
In which beaker of water will sugar dissolve the fastest?
a)

A

b)

B

c)

C

d)

D

9.
Melita and Micah put a spoonful of sand in one cup of water and a spoonful of salt in another cup of water. They then waited one hour. They noticed that the sand made a clump, but that the salt grains could no longer be seen. What conclusions can they make about the two materials?
a)
Salt dissolves in water, but sand does not.
b)
Both sand and salt dissolve in water.
c)
Neither sand nor salt dissolves in water.
d)
Sand dissolves in water, but salt does not.
10.
Sue did an experiment in science class. The picture below shows some of Sue's notes. What event happened in Sue's experiment that changed the water's state of matter?
a)
condensation
b)
melting
c)
evaporation
d)
freezing
11.
What is a solution?
a)
a pure form of matter
b)
a mixture in which the different parts can be seen
c)
a mixture in which the parts are evenly mixed
d)
a solid form of matter
12.

Three containers with the same amount of the same material are shown below. Which container has the substance with the lowest amount of energy?

a)

The container on the left

b)

The middle container

c)

The container on the right

d)

All have an equal amount of energy

13.
How would you separate a mixture of iron filings and sand?
a)
handpicking
b)
magnetic separation
c)
boiling
d)
freezing
14.

What phase change occurs due to losing heat energy?

a)
melting
b)

freezing

c)
evaporation
d)
boiling
15.

What is freezing?

a)

The change of a solid into a liquid

b)

The change of a liquid into a solid

c)

The change of a liquid into a gas

d)

The change of a gas into a liquid

16.

What is the opposite of evaporation?

a)

Condensation

b)

Boiling

c)

Melting

d)

Freezing

17.
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
18.

What happens to the mass of an ice cube as it melts into liquid water?

a)

The mass increases

b)

The mass decreases

c)

The mass stays the same

19.

What are the four major phase changes?

a)

Freezing, Melting, Condensation, Evaporation

b)

Melting, Condensation, Evaporation, Heat

c)

Freezing, Melting, Condensation, Cooling

d)

Condensation, Evaporation, Freezing, Heating

20.

Matter is not created nor destroyed during a phase change.

a)

True

b)

False

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