Copper flame test

Copper flame test

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This image is part of the sequence science and technology: flame tests 2

Credit: SCIENCE PHOTO LIBRARY

Caption: Copper flame test. Positive result of a flame test for copper (Cu), producing a green colour. This is due to the excitation of electrons in the copper by the heat of the flame. As these electrons lose their energy, they emit photons of green light. The colour of the flame is different for different elements and can be used to identify unknown substances. The metal compound being tested here is copper (II) chloride.

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Keywords: analysing, analysis, analytical, analyzing, black background, bunsen burner, chemical, chemistry, classroom, color, colored, colors, colour, coloured, colours, combustion, compound, copper, copper ii chloride, cu, demonstration, electron excitation, electron relaxation, element, elemental, experiment, fire, flame, flame test, green, identification, identifying, lab, laboratory, laboratory equipment, metal, photon emission, positive, school, studio shot, testing, transition metal

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