Question

what is physical change? give two examples

Answer 1

Physical changes are changesaffecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.eg water to ice and ice to water ,water to vapour and vapour to water.

Answer 2

physical changes are the changes that effect the chemical form of a substance
example
melting of ice
change of in vapor by boiling