Copper oxide can refer to:

• Copper(I) oxide (cuprous oxide, Cu₂O), a red powder. Copper(I oxide or cuprous oxide (Cu2O is an Oxide of Copper. It is Insoluble in water and organic Solvents.
• Copper(II) oxide (cupric oxide, CuO), a black powder. Copper(II oxide or cupric oxide (CuO is the higher Oxide of Copper.

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