Atoms and Molecules

This topic traces the idea of the atom from ancient Indian and Greek philosophy to Dalton's atomic theory, and explains the laws of chemical combination that support it. It then covers modern atomic symbols, atomic and m…

• Maharishi Kanad (c. 500 BC) proposed Parmanu — the smallest indivisible particle of matter.
• Democritus and Leucippus independently proposed the idea of indivisible atoms in ancient Greece.
• Lavoisier established the Law of Conservation of Mass: mass is neither created nor destroyed in a chemical reaction.

Full explanation, worked examples & memory tricks in the app