Science

Aim: To observe diffusion in a liquid

Equipment: Petri dish, water, tweezers, a crystal of potassium permanganate.

Method:

1. Half fill your petri dish with cold tap water
2. Place the petri dish on your work bench and allow the water to become settled.
3. Using the tweezers, place a single crystal of potassium permanganate in the center of the petri dish.
4. Observe for 5 minutes.
5. Repeat the experiment using hot water.

Results: 

Observation: When we put the crystals in the water its slowly changed the colour and then would make the whole water purple. We did it with cold water and hot the cold one took longer to dissolve. The solute was the potassium permanganate and the solvent was the water.