CHEMICAL EQUATIONS

Practice Problems

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Part I: Identify the type of reaction and write a balanced chemical equation for each of the following reactions.

1. Zinc + Sulfur ® zinc sulfide

2. potassium chloride + silver nitrate ® silver chloride(s) + potassium nitrate

3. calcium oxide + water ® calcium hydroxide

4. sodium hydroxide + hydrochloric acid ® sodium chloride + water

5. magnesium bromide + chlorine ® magnesium chloride + bromine

6. sodium chloride + sulfuric acid ® sodium sulfate + hydrogen chloride(g)

7. aluminum + iron(III) oxide ® aluminum oxide + iron

8. ammonium nitrite ® nitrogen(g) + water

9. silver nitrate + nickel ® nickel(II) nitrate + silver(s)

10. hydrogen + bromine ® hydrogen bromide(g)

Part II: Complete and balance the following chemical equations.

Composition reactions:

            1. sodium + iodine ®

            2. calcium + oxygen ®

            3. hydrogen + chlorine ®

Decomposition reactions:

            4. nickel(II) chlorate ®

            5. barium carbonate ®

            6. zinc hydroxide ®

Replacement reactions:

            7. aluminum + sulfuric acid ®

            8. potassium iodide + chlorine ®

            9. iron + copper(II) nitrate ® iron(II) nitrate +

Metathesis reactions:

            10. silver nitrate + zinc chloride ®

            11. copper(II) hydroxide + acetic acid ®

            12. iron(II) sulfate + ammonium sulfide ®