Ionic Formula Writing Practice
A Grade 10 science worksheet focusing on writing ionic formulas, including multiple choice, fill-in-the-blanks, and short answer questions.
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Ionic Formula Writing Practice
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Read each question carefully and provide the best answer. Show your work for short answer questions where applicable.
1. Which of the following pairs would form an ionic bond?
Carbon and Oxygen
Sodium and Chlorine
Hydrogen and Nitrogen
Sulfur and Oxygen
2. What is the correct ionic formula for Calcium Oxide?
CaO2
Ca2O
CaO
Ca(OH)2
3. An ionic bond is formed between a and a nonmetal.
4. In an ionic bond, electrons are from one atom to another.
5. The charge of an ion is indicated by its .
6. Explain the octet rule and how it applies to the formation of ionic bonds.
7. Write the ionic formula for the compound formed between Aluminum and Sulfur. Show your steps.
Observe the illustration below, which depicts the formation of an ionic bond.

8. Cations are negatively charged ions.
True
False
9. Polyatomic ions are groups of atoms that carry an overall charge.
True
False
10. Write the ionic formula for Iron(III) Hydroxide. Explain how you determined the subscripts.