Atoms and Elements Study Guide
NOTE: This study is neither all-inclusive nor exclusive of any material that may or may not be on the test or
quiz. Students should study their class notes, class work, and labs as well as this study guide to be best prepared
for any assessment.
1. What is the smallest particle of matter?
2. What are the subatomic particles that make up atoms?
3. Describe (or draw) a typical model of an atom.
4. How many electrons can be on the:
a. First layer
b. Second layer
c. Third layer
d. Fourth layer
5. What are the electrical charges of the subatomic particles?
6. If like charges repel, how does the positively charged nucleus of an atom stay together?
7. What makes one atom different from another?
8. Approximately how many elements can be found in nature?
9. What is the Periodic Table of Elements?
10. What does an element’s atomic number tell about that element?
11. Label the electrons, neutrons, protons, and nucleus. Make sure to include the electrical charges.
12. Use the Periodic Table of Elements to fill in this chart.
Atomic
Name of
Atomic
Symbol
Element
Mass
Number
the Nearest
Whole)
1
Carbon
S
2
8
3
N
4
5
Sodium
Number of Number of Number of
(Round to
Protons
Neutrons
Electrons