With the help of a labelled diagram describe an activity to show that particles of matter are very small. Use the following material that has been provided to you.
Four beakers, three test tubes, dropper, distilled water and few crystals of potassium permanganate.

Explanation

Activity : In four glass beakers marked as 1,2,3 and 4, take distilled water. Fill each beaker to about half. With the help of a spatula, add a few crystals of potassium permanganate to the beaker (1). Stir with the spatula and note the colour of the solution. It will be dark purple. Now transfer a small volume of the solution in a test tube and add this solution to the beaker (2). The solution will be still purple but the colour will be lighter as compared to the solution in beaker (1). Repeat the experiment in beaker (3) and also in beaker (4). The purple colour of the solution will not disappear even in beaker (4) although it will be very very light.

The activity shows that the particles of a matter are very small in size and become even smaller. However, they donot disappear.