Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide. (b) What special name is given to substances like aluminium oxide. Name another metal oxide which behaves like aluminium oxide.

• Al2O3 + 6HCl → 2AlCl3 + 3H2O

Aluminium here acts as basic oxide Al2O3 + 2NaOH → 2NaAlO2 + H2O

Aluminium acts as a acidic oxide here

• Amphoteric oxides which acts as both basic and acidic
• Zinc oxide is another metal which behaves like aluminium oxide