Question

Why are melting and boiling regarded as physical changes ? Explain with examples.​

Answer 1

ANSWER

Melting is an example of a physical change. A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. When we heat the liquid water, it changes to water vapor.

EXAMPLES OF PHYSICAL CHANGE

•Crushing a can.

•Melting an ice cube.

•Boiling water.

•Mixing sand and water.

•Breaking a glass.

•Dissolving sugar and water.

•Shredding paper.

•Chopping wood.