Made up of only 1 type of atoms

Made up of more than 1 type of atoms combined in a fixed ratio

Cannot be split into 2 or more simpler substances by physical or chemical reactions

Can be split into simpler substances (constituent atoms) by chemical reactions.

There are 118 elements known to us

There is no limit to number of compounds that can be formed

Represented by Symbol

Represented by Chemical Formula

Example : Copper (Cu ), Iron (Fe)

Example : Common Salt (NaCl), Sulphuric acid (H 2 SO 4 )

  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