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Aim: To observe convection in a liquid 

Equipment: 200ml beaker water tweezers a crystal of potassium permanganate a drinking straw bunsen burner heat mat tripod and gauze mat 



Method
1 Set up a bunsen burner on a heatproof mat put the gauze mat on the tripod but leave it just to one side of the bunsen burner

2 fill a 200 ml beaker with 150 ml cold water

3. place the beaker on top of the tripod and gauze mat and allow it to settle for a few minutes

4. Carefully insert the drinking straw down one side of the beaker ensuring the straw is touching the bottom of the beaker be careful os you do not want to disturb the water too much

5. using the tweezers drop a crystal of potassium permanganate down inside