Name _________________________________________
I.
Date ________________
Class __________________
Testing Concepts
Directions: In the blank at the left, write the letter of the term that best completes each statement.
_________ 1. All substances are built from ______.
a. compounds
b. oxygen
c. metals
d. atoms
_________ 2. About ______ elements are found on Earth.
a. 9
b. 90
c. 900
d. 9,000
_________ 3. A(n) ______ is a homogeneous mixture of particles so small they cannot be seen
without microscopes and will never settle to the bottom of their container.
a. solution
b. element
c. molecule
d. plasma
_________ 4. A(n) ______ is a mixture that settles upon standing.
a. solution
b. colloid
c. suspension
d. element
_________ 5. A(n) ______ is a mixture that does not scatter light.
a. solution
b. colloid
c. suspension
d. element
_________ 6. Any characteristic of a material that you can observe without changing the identity of
the substances that make the material is a(n) ______.
a. physical property
c. invisible property
b. chemical property
d. none of these
_________ 7. A change in size, shape, or state of matter is called a(n) ______ change.
a. physical
b. chemical
c. atomic
d. impossible
_________ 8. The process for separating substances in a mixture by evaporating a
liquid and recondensing its vapor is called ______.
a. precipitation
b. sifting
c. distribution
d. distillation
Directions: Identify each statement as true or false. If the statement is false, change the underlined word(s)
to make it true.
________
9. A substance is a type of matter without a fixed composition.
________ 10. An ion is a substance in which the atoms of two or more elements are combined in a
fixed proportion.
________ 11. A mixture in which different materials can be distinguished easily is called a
homogeneous mixture.
________ 12. A heterogeneous mixture contains two or more gaseous, liquid, or solid substances
blended evenly throughout.
Chapter Resources • Classification of Matter
31
Name _________________________________________
Date ________________
Class __________________
II. Understanding Concepts
Skill: Concept Mapping
Directions: In the concept map below, write in the correct terms in the spaces provided.
Mixtures
can be
can be
heterogeneous
which are
homogeneous
which are
which are
2.
1.
such as
such as
milk
muddy water
3.
such as
vinegar
Skill: Understanding Cause and Effect
Directions: Answer the following question in complete sentences.
4. Imagine that you are walking outside on a misty night carrying a flashlight. As the road you
are on dips down, you can see more of the flashlight beam in front of you. When it rises up, the
beam is less visible. Explain what could be causing this effect.
Chapter Resources • Classification of Matter
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Name _________________________________________
Date ________________
Class __________________
Directions: Identify each item on the left as either a physical change or a chemical change.
5. A tree is cut down. ________________________
6. Parts of a tree are made into a table. ________________________
7. A tree is turned into sawdust. ________________________
8. The snow on a tree melts. ________________________
9. A tree burns down. ________________________
III.
Applying Concepts
Writing Skills
Directions: Answer the following questions using complete sentences.
1. Suppose a stream were gradually to wear away a rock bed, breaking it into particles and carrying
the particles far away. Would you say the rock had undergone physical or chemical weathering?
Why?
2. Evaluate “If there is only a physical change, all the mass remains,” a friend says. “It’s only in a
chemical change that mass is destroyed. ”How would you respond?
3. Analyze If you went swimming in the ocean and then let your bathing suit dry without
washing it, you might find it stiffened with salt. Where does the salt come from?
Chapter Resources • Classification of Matter
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