Burning of coal is a ___________ change. (physical, chemical)

Explanation

To determine whether the burning of coal is a physical or chemical change, we can analyze the definitions and characteristics of both types of changes.

### Step-by-Step Solution:

1. **Understanding Physical Changes**:
- Physical changes are changes that do not alter the chemical composition of a substance. They can often be reversed and typically involve changes in the state of matter (solid, liquid, gas).
- Example: Melting ice to water is a physical change because the composition (H2O) remains the same.

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