Question
Show experimentally that matter is made up of small particles.
✓
Answer
- Take 2-3 crystals of potassium permanganate and dissolve them in 100ml of water.
- Take out approximately 10ml of this solution and put it into 90ml of clear water.
- Take out 10ml of this solution and put it into another 90ml of clear water.
- Keep diluting the solution like 5 to 8 times.
- Is the water still coloured?
This experiment shows that just a few crystals of potassium can colour a large volume of water. So we conclude that there must be millions of tiny particles.
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