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The flame test carried out on a copper halide. The characteristic bluish-green color of the flame is due to the copper.
The flame test carried out on a copper halide. The characteristic bluish-green color of the flame is due to the copper.
A flame test showing the presence of lithium.
A flame test showing the presence of lithium.
Coloured flames of methanol solutions of different compounds, burning on cotton wool. From left to right: lithium chloride, strontium chloride, calciu
Coloured flames of methanol solutions of different compounds, burning on cotton wool. From left to right: lithium chloride, strontium chloride, calcium chloride, sodium chloride, barium chloride, trimethyl borate, copper chloride, cesium chloride and potassium chloride.
Image: Zinc burning
Image: Zinc burning
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Flames of charcoal
Flames of charcoal
Different flame types of a Bunsen burner depend on oxygen supply. On the left a rich fuel with no premixed oxygen produces a yellow sooty diffusion fl
Different flame types of a Bunsen burner depend on oxygen supply. On the left a rich fuel with no premixed oxygen produces a yellow sooty diffusion flame; on the right a lean fully oxygen premixed flame produces no soot and the flame color is produced by molecular radicals, especially CH and C2 band emission.
A flame test for sodium. The yellow color in this gas flame does not arise from the black-body emission of soot particles (as the flame is clearly a b
A flame test for sodium. The yellow color in this gas flame does not arise from the black-body emission of soot particles (as the flame is clearly a blue premixed complete combustion flame) but instead comes from the spectral line emission of sodium atoms, specifically the very intense sodium D lines.
In zero-G, convection does not carry the hot combustion products away from the fuel source, resulting in a spherical flame front.
In zero-G, convection does not carry the hot combustion products away from the fuel source, resulting in a spherical flame front.