Question

What do you understand by physical change ? explain with example​

Answer 1

Answer:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. ... In general a physical change is reversible using physical means. For example, salt dissolved in water can be recovered by allowing the water to evaporate.

Answer 2

Answer:

In a physical change, a substance undergoes changes only in its physical properties such as shape, size, colour and state, and no new substances are formed. Examples are freezing of water, melting of wax, tearing of paper, and boiling of water to form steam.