Question

difference between metals and nonmetals based on their physical and chemical properties

Answer 1

Physically Metals are shiny , lustrous, hard and strong, malleable(can be beaten into thin sheets), ductile(can be drawn into thin wires) and makes sonorous sound when hit by hammer while non metals are generally brittle(break into pieces when hit hard) , soft(can easily be cut), dull (poor refelectivity) and they don't make any recognised sound when hammered.

Chemically most metals form basic oxides having pH greater than 7 till 14.(eg. Mg forms MgO which forms MgOH, is an alkali)
whereas non-metals form acidic oxides having pH less than 7 to 0.(eg. S forms SO2 which forms H2SO3 and H2SO4, which are acids).

Generally most metal and there oxides and compounds are found in solid state whereas non metal's compound and oxides are found as fluid ( mostly gaseous state).

Thanks

Answer 2

Explanation:

Metals refers to the natural elements that are hard, shiny, opaque and dense. Non-metals implies those chemical substances that are soft, non-shiny, transparent and brittle. Most metals are hard, except sodium. Most non-metals are soft, except diamond