Equipment:
- Petri dish
- Water
- Tweezers
- A crystal of potassium Permanganate
1. Half fill your petri dish with cold tap water.
2. Place the petri dish on your workbench 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 with hot water.
Results Hot water = Video
Cold water = Picture
Discussion:
Cold water - We put a little bit of potassium permanganate in the middle of the petri dish. It was first high concentrated in the middle and after a while it went to low concentration but it spreads throughout the petri dish. It spread slowly throughout the petri dish.
Hot water - We put a little bit of potassium permanganate in the middle of the petri dish. It was first high concentrated in the middle but almost instantly it spread throughout the petri dish like it was running. When heated, the particles starts running because it's like putting fire under their feet.
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