Physical Changes

Chemical Changes

No new substance is formed

New Substance is formed

This change is reversible

This change is normally irreversible

Very little heat or light energy is absorbed or given out in Physical change

A lot of heat or light energy is involved in process

It is also called Physical Reaction

It is also called Chemical Reaction


  • Interconversion of States of matter is Physical change
  • Tearing of paper


  • Burning is a chemical reaction
  • Cooking of food

  1. Class 9
  2. Chapter 2 Class 9 - Is Matter Around Us Pure (Term 1)

About the Author

CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo