Why is burning of a candle involves both physical and chemical change?

Explanation

### Step-by-Step Solution:

1. **Understanding the Components of a Candle**:
- A candle primarily consists of wax (usually paraffin) and a wick made of cotton or another material.

2. **Identifying the Physical Change**:
- When a candle is lit, the wax near the flame melts. This melting process is a **physical change** because it involves a change in the state of matter from solid to liquid without altering the chemical composition of the wax.
- **Explanation**: The wax changes from solid to liquid, but it remains as wax (C25H52), just in a different state.
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