Why is aluminium oxide considered an amphoteric oxide?

Explanation

**Step-by-Step Solution:**

1. **Definition of Amphoteric Oxides:**
Amphoteric oxides are defined as oxides that can react with both acids and bases. This means they can exhibit both acidic and basic properties depending on the nature of the reacting substance.

2. **Aluminium Oxide (Al2O3) as Amphoteric:**
Aluminium oxide (Al2O3) is classified as an amphoteric oxide because it can react with both acids and bases.

...