Question

What can be said about the size of particles of matter?

Answer 1

Answer:

They are very small in size and are so small that they cannot be seen even with the help of a microscope.

Explanation:

For example: Take a beaker and pour 100ml of water in it. Add three or four crystals of potassium permanganate in it. Stir this solution with a glass rod so that the crystals dissolve evenly in the water. Also you will notice that the color of the solution is pink.

Now take four small beakers, marked, A,B,C,D. Pour the pink solution in beaker A. Now pour 100ml of water each in beakers B,C,D.

Now, take 10ml of the pink solution in beaker A and pour it in Beaker B. You will observe that the color of the water turns pink though is it lighter. Next take 10ml of the solution in beaker B and pour it in Beaker C. Again, the solution turns pink though it is fainter. Again, take 10ml of the solution in Beaker C and pour it in Beaker D. You will notice that the solution is still pink but it is much fainter.

This shows that there are millions of tiny particles in 1 crystal of potassium permanganate which evenly spreads out in water and each dilution spreads them further as the water molecules increase and hence the pink color becomes fainter.

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