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Chapter 3 Class 9 - Atoms And Molecules

In this chapter you are going to learn about atoms and molecules with the help of concepts, NCERT questions and extra Teachoo questions prepared by experts.

You will start learning laws of chemical combination which includes -

  • Law of conservation of mass
  • Law of constant proportions

Secondly, you will learn about what an atom is and its properties which includes atomic mass.

Proceeding further, you will learn about what molecules are and their properties which includes the concept of molecular mass and the mole concept.

You will also learn to write the chemical formulas for various reactions.


NCERT Questions

Questions from Inside the chapter

Examples from NCERT Book

Teachoo Questions