Chemistry (NTSE/Olympiad)  

3. Atoms & Molecules

Introduction to Atoms & Molecules

Matter is called ‘padarth’ in Hindi. Kanad was one of the first persons to propose that matter (or padarth) is made up of very small particles called ‘parmanu’. John Dalton called these particles by the name of atom. The word ‘atom’ means ‘indivisible’ something which cannot be divided further. The particles of matter (atoms or parmanu) normally exist in a combined form. This combined form of atoms is now called ‘molecules’. All matter is made up of small particles called atoms and molecules. Different kinds of atoms and molecules have different properties due to which different kinds of matter also show different properties.

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