Question

why does water become coloured when crystals of potassium permanganate are added to it?​

Answer 1

Answer:

The water becomes coloured 'cause potassium contains a specific amount of colour in it.

Explanation:

Answer 2

Answer:

Because of the collision of water molecules.

Explanation:

When potassium permanganate crystals are introduced in the water, the water molecules collide with the surface of the crystals and thus the water becomes coloured.