Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characterstic of particle of matter is illustrated by this observation ?
The characteristic property of particles of matter is that matter is itself made of very small particles. Therefore it can impart colour to a large volume of water.
This shows that the particles of matter are very tiny and can diffuse easily even when the rate of diffusion depends upon the nature of matter and temperature.