However, Al is also amphoteric, which means that it reacts with both acids and bases.

Oxides that react with both acids and bases are amphoteric.

It can also react with strong bases.

It reacts with bases to make dark brown silver(I) oxide.

It does not react with bases easily.

It also reacts with bases to reduce their harmful effects.

It can react with bases to make zinc hydroxide.

Then selenous acid is reacted with bases to make selenites.

It reacts with bases to make ammonia gas.

Thus it reacts with strong bases to form acetylide salts.