Bunsen Burner

A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.

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Using a Bunsen Burner

  1. The air regulator or collar must be turned to fully close the air hole before the burner is lit.
  2. The match should be lit and placed to one side of the chimney before the gas tap is switched on.
  3. A yellow flame is seen. We always start with a yellow flame because it is easily visible and shows that the Bunsen burner is on.
  4. Change the yellow flame to a blue flame by turning the collar and opening the air hole. The hottest part of the flame is a few millimetres above the tip of the inner blue cone. We change to the blue flame, which is hotter than the yellow flame, when we want to use the Bunsen burner.
  5. The yellow flame can be made again by turning the collar and closing the air hole.
Bunsen burner flames

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