Question

Difference between chemical and physical changes.

Answer 1

Physical change
1. Brings about change in physical properties such as physical state, shape, size
2. No change in chemical composition of a substance
3. No new substance is formed
4. It is temporary and reversible
Chemical change
1. Brings about change in properties
2. Always change in chemical composition of a substance
3. A new substance is always formed
4. It is permanent and irreversible