Name
Class
Chapter 2
Date
Properties of Matter
Chapter Test A
Multiple Choice
Write the letter that best answers the question or completes the statement on
the line provided.
1. Which of the following is NOT a pure substance?
a. milk
b. oxygen
c. water
d. carbon dioxide
2. If an unknown substance CANNOT be broken down into
simpler substances, it is
a. a compound.
b. an element.
c. made of one kind of atom.
d. both b and c
3. The symbol for gold is
a. Au.
b. Al.
c. Gl.
d. Go.
4. Water is a compound because it
a. can be broken down into hydrogen and oxygen.
b. has a fixed composition.
c. is made of water atoms joined together.
d. both a and b
5. Which of the following is a characteristic of a mixture?
a. can have varying properties
b. has a fixed composition
c. contains no pure substances
d. both a and b
6. Which of the following is a heterogeneous mixture?
a. water in a swimming pool
b. sugar water
c. a jar of mixed nuts
d. stainless steel
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7. You are about to open a container of soy milk but notice that there
are instructions to “shake well before serving.” The soy milk is
most likely a
a. solution.
b. pure substance.
c. colloid.
d. suspension.
8. Which of the following has the highest viscosity?
a. corn syrup
b. milk
c. water
d. orange juice
9. A material that is malleable and conducts electricity is most likely
a. wood.
b. ice.
c. a metal.
d. motor oil.
Physical Science
■
Chapter 2 Test A
9
Name
Class
Date
10. Which of the following materials is useful for making molds
because it has a low melting point?
a. wood
b. metal
c. clay
d. wax
11. What method can be used to separate parts of a liquid mixture
when the entire mixture can pass through a filter?
a. filtration
b. distillation
c. straining
d. screening
12. Which of the following is a physical change?
a. sawing a piece of wood in half
b. burning a piece of wood
c. rust forming on an iron fence
d. a copper roof changing color from red to green
13. A substance that has high reactivity
a. easily combines chemically with other substances.
b. burns in the presence of water.
c. displaces dissolved oxygen.
d. has a high boiling point.
14. During which of the following chemical changes does a
precipitate form?
a. Vinegar is added to baking powder.
b. Lemon juice is added to milk.
c. Lemon juice is added to water.
d. A banana ripens.
15. Which of the following is evidence of a chemical change?
a. Iron changes color when heated.
b. Gas bubbles form in boiling water.
c. Balls of wax form when melted wax is poured into ice water.
d. A gas forms when vinegar and baking soda are mixed.
Completion
Complete each statement on the line provided.
1. Pure substances are either
or
.
2. The symbols for elements have either
or
letters.
3. A compound can be made from two or more elements or other
joined together in a fixed composition.
4. Rust forms because iron and oxygen are highly
elements.
5. When a metal changes color because it has been heated, a(an)
change occurred. When a metal changes
color because it has reacted with another substance, a(an)
change occurred.
10
Physical Science
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Chapter 2 Test A
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Name
Class
Date
Short Answer
Use complete sentences to write the answers to the questions on
the lines provided.
1. How can you change the properties of a mixture?
Melting and Boiling Points of Some Substances
Substance
Melting Point
Hydrogen
–259.3°C
–252.9°C
Nitrogen
–210.0°C
–195.8°C
16.6°C
117.9°C
Acetic acid
Gold
1064.2°C
Boiling Point
2856°C
Figure 2-1
2. Based on the information in Figure 2-1, which substances would be
solids at 10.0°C?
3. How do changes in temperature usually affect the viscosity of a
liquid?
4. Give an example of a physical change that can be reversed and an
example of a physical change that cannot be reversed.
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5. What kind of change is taking place if you see white mold
growing on a strawberry?
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Physical Science
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Chapter 2 Test A
11
Name
Class
Date
Using Science Skills
E
aeytable to answer each question. Write the answers on a separate sheet
Ussesth
of paper.
S up po se you want to separate the leaves, acorns, and twigs
from a pile of soil. Filtration and distillation are two processes
Properties of Three Mixtures
of separating mixtures. Explain which process you would use
Scatte r s Light
Separates into
Can Be Separated
and why. Be specific.
Layers
by Filtration
Mixture A
Yes
No
No
Mixture B
No
No
No
Mixture C
Yes
Yes
Yes
Figure 2-2
1. Classifying Based on the data in Figure 2-2, is Mixture C a
homogeneous or heterogeneous mixture? Explain your answer.
2. Analyzing Data Which of the mixtures in Figure 2-2 is a solution?
Explain how you know.
3. Analyzing Data Which of the mixtures in Figure 2-2 is a colloid?
Explain how you know.
4. Classifying Rank the mixtures in Figure 2-2 in order of the size of their
largest particles, starting with the mixture with the smallest particles.
5. Predicting Why can’t Mixture B in Figure 2-2 be separated by filtration?
What method might be used to separate the substances in Mixture B?
Essay
Write the answer to each question on a separate sheet of paper.
Compare the properties of water to the properties of the elements
it contains.
Explain how you could use a physical property to test the purity of a
silver coin without damaging the coin.
Suppose you want to separate the leaves, acorns, and twigs from a
pile of soil. Filtration and distillation are two processes of separating
mixtures. Explain which process you would use and why.
Explain why rust forms in steel tanks that hold seawater in ships. How
can nitrogen be used to reduce rust in these tanks?
Suppose you heat a liquid and then gas bubbles are produced. With no
other evidence, can you tell if a physical change or chemical change
is occurring? Explain your answer.
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12
Physical Science
Chapter 2 Test A