Ionic Compound Formula Writing
A Grade 9 science worksheet on writing chemical formulas for ionic compounds, including exercises on identifying ions and balancing charges.
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Ionic Compound Formula Writing
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Date:
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Read each question carefully and provide the correct chemical formula for the given ionic compounds. Remember to balance the charges.
Review the illustration below showing the formation of an ionic bond.
1. An atom that loses electrons becomes a positively charged ion called a .
2. An atom that gains electrons becomes a negatively charged ion called an .
3. Ionic bonds typically form between a and a .
4. Which of the following is the correct formula for sodium chloride?
NaCl2
Na2Cl
NaCl
Na(Cl)2
Write the chemical formula for the ionic compound formed between the following ions:
5. Calcium (Ca²⁺) and Bromide (Br⁻)
6. Aluminum (Al³⁺) and Oxide (O²⁻)
7. Potassium (K⁺) and Sulfate (SO₄²⁻)
8. Magnesium (Mg²⁺) and Phosphate (PO₄³⁻)
Determine if the following statements are True or False.
9. In an ionic compound, electrons are shared between atoms.
True
False
10. The sum of the charges in an ionic compound must always be zero.
True
False
Match the name of the ionic compound with its correct chemical formula.
11. Lithium Fluoride
a. Fe₂O₃
12. Iron(III) Oxide
b. LiF
13. Sodium Carbonate
c. Na₂CO₃
14. Aluminum Hydroxide
d. Al(OH)₃
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