Writing Chemical Formulas for Ionic Compounds
A Grade 9 science worksheet on writing chemical formulas for ionic compounds, covering nomenclature, charges, and balancing.
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Writing Chemical Formulas for Ionic Compounds
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Read each question carefully and follow the instructions to write the correct chemical formulas for ionic compounds. Remember to balance the charges to achieve a neutral compound.
An ionic bond is formed when one or more electrons are transferred from a metal atom to a nonmetal atom, resulting in the formation of oppositely charged ions that attract each other.
1. Ionic compounds are formed between a and a .
2. The overall charge of an ionic compound must always be .
3. Cations are ions with a charge, while anions have a charge.
4. The criss-cross method is used to determine the of each ion in the chemical formula.
Write the chemical formula for the ionic compound formed from the following ions:
5. Sodium (Na+) and Chloride (Cl-)
6. Magnesium (Mg2+) and Oxide (O2-)
7. Aluminum (Al3+) and Fluoride (F-)
8. Calcium (Ca2+) and Nitride (N3-)
9. Iron(III) (Fe3+) and Sulfate (SO42-)
10. What is the correct chemical formula for potassium iodide?
KI2
K2I
KI
K(IO3)
11. The subscript '1' is never written in a chemical formula.
True
False
12. Explain why ionic compounds are typically formed between metals and nonmetals.
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