Copper oxides

Credit: ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Copper oxides on watchglasses. The colours show the difference in oxidation state of the copper in copper (I) oxide (Cu2O, red) and copper (II) oxide (CuO, black).

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Keywords: chemical, chemistry, colour, colours, comparing, comparison, contrast, copper, copper (i) oxide, copper (ii) oxide, copper oxide, couple, duo, inorganic, laboratory, metal, oxidation state, oxides, pair, powder, solid, states, transition, two

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