Question

How to distinguish between physical and chemical changes?

Answer 1

Difference between Physical & Chemical change.

Pʜʏsɪᴄᴀʟ ᴄʜᴀɴɢᴇ:

[1] Change is temporary.

[2] No new product is formed.

[3] It only effect physical properties.

[4] Ex: Burning of wax.

Cʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ:

[1] Change is permanent.

[2] New product is formed.

[3] It effect both physical & chemical properties.

[4] Ex: Melting of wax.

Answer 2

HEY MATE..

HERE'S UR ANSWER..

PHYSICAL CHANGES :-

A physical change involves change in physical properties.

Changes are reversible.

No changes in chemical composition are observed.

No new product is formed.

Ex - Melting of Wax.

CHEMICAL CHANGE

A chemical change involves change in

chemical properties.

Changes are irreversible.

Changes in chemical composition are observed.

New products are formed.

Ex - Burning of Wax.

HOPE IT HELPS U..