Question

Give an example with explanation to show that law of conservation of mass applies to physical changes also.

Answer 1

Melting of ice is a physical change.
Take an ice cube and melt it in a glass .
Weight of an ice cube containing glass is equal to the weight of glass containing water.Thus Law of conservation of mass is proved.

Answer 2

law of conservation of mass states that mass can neither be created nor destroyed in a chemical reaction however this appear to physical change also.
*Example* -
when ice melting water the mass of water equal to the mass of ice. This verifies the law of conservation of mass.