Question

Mention any two differences between physical and chemical changes. Give one example of each.

Answer 1

• Changes in matter can be classified into two, i.e.., physical and chemical changes.
• Physical changes involve only changes in state. colour, appearance etc..,
• Chemical changes involve changes in boding, energy etc..,
• New products can be formed in chemical changes whereas in physical changes no such formation will be there.

Physical changes	Chemical changes
Changes which involve only physical properties like colour, appearance etc..,	Changes which involve chemical properties like nature of bonding etc..,
No new substances will be formed.	New substances will be formed here involving heat, and energy change.
Example: Melting of ice.	Example: Ripening of fruit.