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Worksheet 12 : Neutral atoms and ions . Topic 3

Set A: Terms and definitions Objective: By defining these words , you’ll become more familiar
with terms and definitions related to ions and neutral atoms.

Define the terms and answer questions below. Be neat and clear.

1. Neutral atom

2. Ion

3. Positive ion

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4. Negative ion

5. Valence electron

Se t B: Comparisons in ions and neutral atoms Objective: To test your knowledge of facts related
of ions and neutral atoms
Answer the followings in one clear sentence.

6. Compare the number of electrons to the number of protons in a neutral atom.

7. Compare the number of electrons of a positive ion to that of the neutral atom.
Include both positive ion and neutral atom in your answer.

8. Compare the number of electrons of a negative ion to that of the neutral atom.
Include both negative ion and neutral atom in your answer.

9. Compare the number of protons to the number of electrons in a positive ion.
Include both protons and electrons in your answer.

10. Compare the number of protons to the number of electrons in a negative ion.
Include both protons and electrons in your answer.

11. Compare the size of a positive ion to that of the neutral atom.
Include both positive ion and neutral atom in your answer.

12. Compare the size of a negative ion to that of the neutral atom.

Include both negative ion and neutral atom in your answer.

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