Decomposition reactions require energy either in the form of the heat or light or electricity for breaking down the reactants. Write one equations each for decomposition reactions where energy is supplied in the form of heat, light and electricity .

Explanation

To answer the question regarding decomposition reactions that require energy in the form of heat, light, or electricity, we can provide one equation for each type of energy input.

### Step-by-Step Solution:

1. **Decomposition Reaction with Heat:**
- When calcium carbonate (CaCO₃) is heated, it decomposes into calcium oxide (CaO) and carbon dioxide (CO₂).
- **Equation:**
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