Decomposition:    AB → A + B

1. Binary compound → 2 elements

Example: 2 NaCl (s) → 2 Na (s) + Cl2 (g)

2. Metal carbonates → metal oxides and carbon dioxide

Example: 

3. Metal chlorates → metal chlorides and oxygen

Example: 

4. **Sulfurous acid → sulfur dioxide and water    

5. Specifically: 

6. **Carbonic acid → carbon dioxide and water    

7. Specifically: 

8. Hydrogen peroxide → water and oxygen   

9. Specifically: 

10. **Ammonium hydroxide → ammonia and water   

11. Specifically: 

**decompositions that can occur during a double displacement reaction