Question

even two or three crystal of potassium per magnet can impact colour to a very large volume of water with characteristics of particle of matter is illustrated by his observation​

Answer 1

Answer:

Even two-three crystals of “potassium permanganate” can impart colour to a “large volume of water” due to the natural phenomenon of diffusion.

Diffusion is a process in which the solute particles move from regions of "high concentration to regions" of "lower concentration" without the presence of any membrane. The movement of the solute particles (‘molecules’, ‘atoms’ or ‘ions’) is free and unhindered.

The potassium permanganate crystals spread out to regions where it’s only pure water and no solute particle of it.