What are oxides? Give two examples of each of the following oxides.

(a) Basic oxide

(b) Acidic oxide

(c) Amphoteric oxide

(d) Neutral oxide

Oxides are compounds which essentially contains oxygen in its molecule, chemically combined with a metal or a non-metal.

(a) Calcium oxide (CaO) and magnesium oxide (MgO) are basic oxides.

(b) Carbon dioxide (CO₂) and sulphur dioxide (SO₂) are acidic oxides.

(c) Zinc oxide (ZnO) and aluminium oxide (Al₂O₃) are amphoteric oxides.

(d) Carbon monoxide (CO) and nitric oxide (NO) are neutral oxides.