This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Nickel oxide and copper carbonate. en mixture of nickel II oxide and possibly nickel II carbonate and copper II carbonate This was made by electrolyzing nickel US coin in sodium carbonate solution to make nickel II hydroxide and copper II hydroxide The copper II hydroxide formed the copper II carbonate own Chemicalinterest Nickel