Ionic Formula Writing Worksheet
Practice writing chemical formulas for ionic compounds, including those with polyatomic ions and transition metals.
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Ionic Formula Writing Practice
Name:
Date:
Score:
Carefully read each question and follow the instructions to write the correct ionic formulas. Remember to balance charges and use parentheses for polyatomic ions when necessary.
An ionic bond forms between a metal and a nonmetal, where electrons are transferred from the metal atom to the nonmetal atom, creating oppositely charged ions that attract each other.
Write the chemical formula for the following binary ionic compounds.
1. Sodium chloride:
2. Magnesium bromide:
3. Aluminum oxide:
4. Calcium sulfide:
Write the chemical formula for the following ionic compounds containing polyatomic ions.
5. Potassium nitrate:
6. Ammonium sulfate:
7. Iron(III) hydroxide:
8. What is the correct chemical formula for Copper(II) phosphate?
CuPO₄
Cu₂(PO₄)₃
Cu₃(PO₄)₂
Cu(PO₄)₂
9. Which of the following is the correct formula for Chromium(III) oxide?
CrO
Cr₂O₃
CrO₃
Cr₃O₂
Indicate whether the following statements are true or false.
10. The formula for magnesium nitride is Mg₃N₂.
True
False
11. When writing ionic formulas, the cation is always written first.
True
False
Match each ionic compound name on the left with its correct chemical formula on the right.
12. Lithium carbonate
a. Fe₂(SO₄)₃
13. Iron(III) sulfate
b. Li₂CO₃
14. Aluminum phosphate
c. AlPO₄
15. Zinc chloride
d. ZnCl₂
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