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wood prints flame test wood prints potassium wood prints bunsen burner wood prints analysis wood prints chemical wood prints chemistry wood prints combustion wood prints

photographs flame test photos potassium photos bunsen burner photos analysis photos chemical photos chemistry photos combustion photos

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Performing a flame test (blue) on a potassium compound. 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 placed on the end of a platinum wire and held 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. A platinum wire is used as it does not give a flame test colour of its own.

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