Give an example of reaction where following are involved: Heat is released

Explanation

### Step-by-Step Solution

1. **Understanding Exothermic Reactions**:
- Exothermic reactions are chemical reactions that release heat energy into the surroundings. This means that the products of the reaction have less energy than the reactants.

2. **Identifying an Example**:
- A common example of an exothermic reaction is the combustion of carbon. When carbon (C) burns in the presence of oxygen (O₂), it produces carbon dioxide (CO₂) and releases heat.

...