The particles of matter are very, very small:
The very, very small size of particles of matter can be shown by performing the following experiment by using potassium permanganate and water.
Take 2-3 crystals of potassium permanganate and dissolve them in 100 ml of water in a beaker. We will get a deep purple colored solution of potassium permanganate in water.
Take out approximately 10 ml of this solution and put it into 90 ml of clear water in second beaker. Due to this dilution, the color of potassium permanganate solution in the second beaker becomes a bit lighter.
Take out 10 ml of this solution and put it into another 90 ml of clear water in third beaker. The color of solution will become still lighter.
Keep diluting the solution like this 5 to 8 times.
In this way, we get a very dilute solution of potassium permanganate in water but the water is still colored.
This experiment shows that just a few crystals of potassium permanganate can colour a large volume of water.
So we conclude that there must be millions of tiny particles in just one crystal of potassium permanganate, which keep on dividing themselves into smaller and smaller particles.

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