Question

State the four differences between physical and chemical change.

Answer 1

Physical change	Chemical change
1. No new substance is formed.	1. New products are formed.
2. Only physical properties are getting changed like shape, size, melting and boiling points.	2. Chemical properties are getting changed which in turn affect the physical properties as well.
3. Physical changes are usually temporary.	3. Chemical changes are permanent.
4. The process is reversible generally.	4. The process is irreversible.