Cells And Classification Worksheet
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4NAME ______________________
7. The smallest unit of a compound is a(n):
a. atom
SOL SCIENCE REVIEW
b. *molecule
MATTER SOL 5.4
c. cell
CELLS AND CLASSIFICATION
SOL 5.5
8. Water (H2O) is a(n):
a. atom
1. This is NOT an example of matter:
b. *compound
a. a ball
c. cell
b. *a sound wave
c. a molecule of air
9. H20 (water) is a compound formed from:
c. a drop of water
a. *2 hydrogen atoms and one oxygen
atom
2. The smallest unit of matter is the:
b. 2 oxygen atoms and one hydrogen
a. molecule
atom.
b. *atom
c. compound
10. Salt (NaCl) is a:
a. atom
3. Which can be seen without a microscope?
b. *compound
a. atoms
c. cell
b. molecules
c. *neither
11. When two substances combine but do not
lose their original characteristics, they form a :
4. All matter is made up of pure elements or
a. *mixture
elements which have combined to make other
b. compound
substances. There are over _____ known
elements.
12. Air is a ________ of many different gases.
a. 10
a. compound
b. *100
b. *mixture
c. 1000
d. one million
13. A ________ is a mixture in which one
substance dissolves in another.
5. The smallest part of an element is a(n):
a. *solution
a. molecule
b. compound
b. cell
c. juice
c. *atom
14. Sugar dissolved in water is a:
6. When two or more elements combine
a. solution
chemically to form a NEW substance, the
b. mixture
substance is called a:
c. *both
a. mixture
b. *compound
15. Which of the following is a compound?
c. solution
a. sodium
b. oxygen
c. *carbon dioxide
d. hydrogen
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