Equipment:
Petri dish or beaker
water
straw
a crystal of potassium permanganate
Method
1. half fill you Petri dish/beaker with cold tap water.
2. Place the Petri dish or beaker on your workbench and allow the water to become settled.
3. Using the tweezers, place a single crystal of potassium permanganate in the centre of the Petri dish/beaker.
4. Observe for 5 minutes.
5.repeat the experiment using hot water.
In warm water: The crystals spread quicker then the cold water
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