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There isn't a reaction really. this is a flame test that shows the basic principle behind the likes of atomic adsorption spectroscopy and the like.

What happens is, copper is heated over a Bunsen burner. in the actual atoms, the outermost electron/s in the outer energy level of the atom become excited due to energy from the flame. They jump to a higher energy level than before, and when they fall back down to the original energy level they emit a photon of light, which accounts for the colour change of the flame

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14y ago

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