Distinguish between the physical properties of metals and non-metals with reference to —

(a) lustre

(b) malleability

(c) ductility

(d) tensile strength

(e) sonority

(f) conduction of heat and electricity

(g) melting and boiling point

(h) density

With reference to the physical properties of metals and non-metals, state the following exceptions.

(a) a metal which is liquid at room temperature

(b) a non-metal which sublimes and is lustrous

(c) a non-metal which has high tensile strength

(d) a non-metal which conducts electricity

(e) a metal which floats on water

With reference to the following metals state their – use in daily life

Metals:

(a) copper

(b) iron

(c) aluminium

(d) magnesium

(e) zinc

(f) lead

(g) silver

Describe a simple experiment to prove that – a copper wire conducts electricity, but a piece of coal does not.