Ionic Compound Formulas Worksheet
A Grade 12 Chemistry worksheet focusing on writing and understanding ionic compound formulas, including polyatomic ions and transition metals.
Includes
Standards
Topics
Ionic Compound Formulas
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Read each question carefully and provide the best answer. Show all work for formula derivation where applicable.
Observe the illustration of ionic bond formation:
1. Ionic compounds are formed between a and a .
2. When atoms form ionic bonds, they transfer to achieve a stable electron configuration.
3. The overall charge of an ionic compound must always be .
1. Write the chemical formula for the ionic compound formed between Calcium and Chlorine.
2. Determine the formula for the ionic compound formed from Aluminum and Oxygen.
1. Which of the following is the correct formula for Sodium Sulfate?
NaSO4
Na2SO4
Na(SO4)2
NaS
2. What is the correct formula for Iron(III) Oxide?
FeO
Fe2O3
Fe3O2
Fe(OH)3
Match each ionic compound name on the left with its correct chemical formula on the right.
1. Potassium Iodide
a. (NH4)3PO4
2. Magnesium Hydroxide
b. KI
3. Ammonium Phosphate
c. Mg(OH)2
4. Copper(II) Nitrate
d. Cu(NO3)2
1. The criss-cross method can be used to determine the subscripts in an ionic formula.
True
False
2. Polyatomic ions are groups of atoms that carry a net positive or negative charge.
True
False
Explain why parentheses are used in chemical formulas for ionic compounds containing polyatomic ions, using Magnesium Hydroxide as an example.