Question

when a crystal of potassium permanganate is placed in a beaker its purple colour spread throughout the water which characteristic of particles of matter is illustrated by the observation

Answer 1

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"particles of matter are very small" is the characteristic of matter illustrated by the observation.

(because) :-

even a single and very small particle of potassium permanganate which is not visible by us can change the whole colour of water.

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Answer 2

Answer:

Potassium permaganate has small particles also the water has. This is why,when we dissolve potassium permaganate into the water the process of difussion takes place.