(a) State two differences in the chemical properties of metals and non-metals. (b) List two...
CHEMISTRY
WAEC 1994
(a) State two differences in the chemical properties of metals and non-metals.
(b) List two general methods of extract metals from their ores.
Explanation
(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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