Page 28 - Teacher Preview Copy

Worksheet 9: The Atomic Structures . Topic 3

Set A: Terms and definitions Objective: By defining these words, you will become more familiar with
atomic structure related terms and their definitions.
Define, neatly and clearly, the following atomic structure related terms.

1. Nucleus

2. Neutron

3. Proton

Subatomic particles Teacher Preview Copy

4. Electron

5. Nucleons

6. Atomic number

7. Mass number

8. Atomic mass Teacher Preview Copy

9. Isotopes

10. Atomic mass unit

Set B: The Subatomic Particles Objective: To test your knowledge of facts related to the

three subatomic particles
Complete the table below

Symbol Mass Charge Location
11.
Proton

12.
Electron

13. Neutron

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