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Flame test
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<p>A flame test is relatively quick test for the presence of some elements in a sample. The technique is archaic and of questionable reliability, but once was a component of <a href="/facts/Qualitative_inorganic_analysis/KnrhhYj6">qualitative inorganic analysis</a>. The phenomenon is related to <a href="/facts/Pyrotechnic/Gocs5Gcu">pyrotechnics</a> and <a href="/facts/Atomic_emission_spectroscopy/5s0wg1sX">atomic emission spectroscopy</a>. The color of the <a href="/facts/Flame/UMNDVEe8">flames</a> is understood through the principles of <a href="/facts/Atomic_electron_transition/HeaF4JJk">atomic electron transition</a> and <a href="/facts/Photoemission/gIDcdm5U">photoemission</a>, where varying elements require distinct energy levels (<a href="/facts/Photon/mFNhAEzA">photons</a>) for electron transitions. </p>