Question

1. Explain any five differences between metals and non-metals?

Answer 1

Differences between metals and non-metals:

Property	Metal	Non-metal
(i) Physical state	Solid (exception- mercury)	Different physical states
(ii) Hardness	Hard (exception- sodium, potassium)	Solid non-metals are soft (exception - diamond)
(iii) Lustre	Lustrous	not lustrous (exception - iodine, diamond, graphite)
(iv) Conduction of heat, electricity	good conductors	poor conductors (exception - graphite)
(v) malleability	malleable	brittle