Decomposition reactions are always initiated with the supply of energy. Give appropriate reasons.

Explanation

**Step-by-Step Solution:**

1. **Definition of Decomposition Reaction:**
- A decomposition reaction is a type of chemical reaction where a single reactant breaks down into two or more products. For example, when potassium chloride (KCl) breaks down, it can yield potassium (K) and chlorine gas (Cl₂).

2. **Understanding Bonding:**
- In a compound like potassium chloride, the atoms are held together by chemical bonds. These bonds are formed due to attractive forces between the atoms.

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