Notes Class 9 Science Chapter 3 Atoms and Molecules
Notes For All Chapters Science Class 9 CBSE 1. Introduction Ancient Indian philosopher Maharishi Kanad (around 500 BC) proposed that matter can be divided into smaller and smaller particles until we reach indivisible particles called Parmanu. Pakudha Katyayama further said these particles exist in combined forms to form different substances. Around the same time, Greek […]