1994 WAEC Chemistry Theory (a) State two differences in the chemical properties of metals and non-metals. (b) List two...

(a) State two differences in the chemical properties of metals and non-metals.

(b) List two general methods of extract metals from their ores.

(a) Two differences in the chemical properties of metals and non-metals Metals Non-Metals

Metals

Non-Metals

1. it can form basic oxides

2. It can form electrovalent compounds

1. It can form acidic oxides

2. It can form covalent compounds

(b) Two general methods of extracting metals from their ores are:-

(i) Reduction by electrolysis and

(ii) By reduction with carbon II oxide.

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