Answer the following questions:
 
1. Define exothermic reactions with an example.
 
A is called an exothermic reaction.
Example: + heat
 
2. Provide one balanced chemical equation for each of the following types of decomposition reactions: Thermal, photolytic, and electrolytic.
 
Decomposition reaction using heat: 

Decomposition reaction using light: 

Decomposition reaction using electricity: