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How to Boil in Test Tubes

In a chemistry laboratory, you may be required to bring a liquid to a boil. On occasion, a large flask under a Bunsen burner may be sufficient. On the other hand, if you only wish to boil a small amount of liquid, it is much more energy- and time-efficient to boil the liquid in a test tube. Boiling a liquid in a test tube requires quick and careful handling of the test tube and the flame.

Bunsen burner
Chemistry tongs

Instructions

- 1
  Pour the liquid to be boiled into your test tube. Grasp the test tube with your chemistry tongs.
- 2
  Turn on the Bunsen burner. Hold the test tube at a diagonal angle to the Bunsen burner's flame. Point the top of the test tube away from yourself and any other people around you, in case the liquid boils out of the tube.
- 3
  Move the upper portion of the test tube with liquid in and out of the flame. Depending on its chemical components, the liquid will begin to boil within one to two minutes.

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