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
Related Worksheets
Grade 12 Burette Reading Worksheet
A worksheet for Grade 12 Chemistry students to practice reading and understanding burette measurements.
Balancing Nuclear Reactions Worksheet
Grade 12 Science worksheet focused on balancing nuclear equations, identifying types of decay, and understanding nuclear stability.
Hydrocarbons Worksheet
Grade 12 Chemistry worksheet covering the nomenclature, structure, properties, and reactions of various hydrocarbon classes.
Grade 12 Molecular Structure Worksheet
A Grade 12 Chemistry worksheet focusing on molecular structure, VSEPR theory, hybridization, and intermolecular forces.
Percent Abundance of Isotopes Worksheet
Grade 12 Chemistry worksheet on understanding and calculating percent abundance of isotopes, average atomic mass, and mass spectrometry.
Acid-Base Nomenclature Worksheet
A Grade 12 Chemistry worksheet covering the nomenclature of acids and bases, including common naming conventions and formulas.
Ionic Bonds Worksheet
A Grade 12 Chemistry worksheet exploring the principles of ionic bonding, including formation, properties, and examples.
Ionic Bonds Worksheet
A Grade 12 Chemistry worksheet exploring the principles of ionic bonding, including formation, properties, and examples.