Aim: To demonstrate how to heat a liquid inside a test tube.
Equipment: Bunsen Burner, Heatproof mat, Lighter, Test tube tongs, Safety glasses.
Method:
1. Light the Bunsen burner.
2. Fill your test tube to approximately 5ml water.
3. Turn the collar at the Bunsen so it is a blue flame
4. Holding the test tube tongs, Tilt the test tube on a 45 degree angle and place the bottom of the test tube into the flame ensure that the mouth of the rest tube is not pointing towards anyone.
5. Gently wave the test tube in and out of the flame, Remember you are trying to heat the liquid gently.
6. Once the water starts to gently bubble, Take it away from the flame. Carefully pour the hot water into the sink.
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