Performing A Flame Test On Barium
by Jerry Mason/science Photo Library
Title
Performing A Flame Test On Barium
Artist
Jerry Mason/science Photo Library
Medium
Photograph - Photograph
Description
Performing a flame test (yellow) on barium. A flame test is a simple way to test for the presence of certain metals in a compound. A small amount of the sample is held on a platinum wire in a Bunsen flame. Some metals can be detected by the colour of flame produced. The colour of the flame is caused by the fluorescence of the metal ions within it; the compound is ionised by the heat and the excited metal ions give out light of a characteristic wavelength or colour. Platinum wire is used as it does not give a flame test colour of its own.
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September 12th, 2018
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