Three states of matter, intermolecular interactions, types of bonding, melting and boiling points,role of
gas laws in elucidating the concept of the molecule, Boyle’s law, Charle’s law, Gay Lussac’s law, Avogadro’s
law, ideal behaviour, empirical derivation of gas equation, Avogadro number, ideal gas equation. Kinetic
energy and molecular speeds (elementary idea), deviation from ideal behaviour, liquefaction of gases,
critical temperature .Liquid State – Vapour pressure, viscosity and surface tension (qualitative idea only, no mathematical derivations).
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