Aim: To demonstrate how to heat liquid inside a test tube.
Equipment:Bunsen burner,Heatproof mat,Lighter,Test tube,test tube tongs and safety glasses.
Method:
1 Light the Bunsen burner
2 Fill your test tube to approximately 5 ml water
3 Turn the collar at the Bunsen so it is a blue flame
4 Holding the test tube with the test tube tongs tilt the test tube on a 45 degree angle an and place the bottom of the test tube into the flame ensure that the mouth of the test tube is facing towards others.
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 bubbly,take is away from the flame carefully pour the water into the sink.
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