Ionic Formula Writing Worksheet
Practice writing chemical formulas for ionic compounds, including those with polyatomic ions, for Grade 9 Chemistry.
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Ionic Formula Writing Practice
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Read each question carefully and write the correct chemical formula for the given ionic compound. Remember to balance the charges.
Ionic compounds are formed when a metal and a nonmetal transfer electrons, creating positively charged cations and negatively charged anions. The chemical formula represents the simplest whole-number ratio of these ions to achieve electrical neutrality.
Write the chemical formula for the following ionic compounds:
1. Sodium Chloride:
2. Magnesium Oxide:
3. Aluminum Fluoride:
4. Calcium Bromide:
5. Potassium Iodide:
Write the chemical formula for the following ionic compounds, paying attention to the Roman numerals:
6. Iron(III) Chloride:
7. Copper(I) Oxide:
8. Lead(II) Nitrate:
9. Which of the following is the correct formula for Ammonium Sulfate?
NH₄SO₄
(NH₄)₂SO₄
NH₄(SO₄)₂
(NH₄)₂SO₄₂
Complete the formulas for these compounds containing polyatomic ions:
10. Calcium Hydroxide:
11. Sodium Carbonate:
12. Aluminum Phosphate:
Determine if the following statements are True or False.
13. The formula for Magnesium Nitride is Mg₃N₂.
True
False
14. When writing ionic formulas, the cation always comes first.
True
False