Writing Chemical Formulas for Ionic Compounds
A Grade 12 chemistry worksheet focusing on writing chemical formulas for ionic compounds, including naming conventions and polyatomic ions.
Includes
Standards
Topics
Writing Chemical Formulas for Ionic Compounds
Name:
Date:
Score:
Read each question carefully and provide the best answer. Remember to balance charges when writing chemical formulas for ionic compounds.
1. Which of the following best describes an ionic bond?
Sharing of electrons between two nonmetals
Transfer of electrons from a metal to a nonmetal
Attraction between two positively charged ions
Formation of a metallic lattice structure
2. What is the correct chemical formula for potassium iodide?
PI
K₂I
KI₂
KI
3. An ionic compound is formed between a and a nonmetal.
4. The overall charge of an ionic compound must always be .
5. The ion formed from a metal is called a , while the ion formed from a nonmetal is called an .
6. Explain the criss-cross method for writing chemical formulas of ionic compounds.
7. Write the chemical formula for the ionic compound formed between Calcium (Ca) and Oxygen (O). Show your work.
Observe the illustration below showing the formation of an ionic bond:
8. Based on the illustration, describe what happens to the electrons during the formation of an ionic bond.
Match the polyatomic ion with its correct chemical formula.
9. Sulfate
a. OH⁻
10. Nitrate
b. CO₃²⁻
11. Hydroxide
c. SO₄²⁻
12. Carbonate
d. NO₃⁻
Write the chemical formula for the following ionic compounds:
13. Sodium Chloride
14. Aluminum Oxide
15. Magnesium Phosphate