welllthere are number of metals which can serve the purpose.more scientifically speaking,the metals which have a greater tendency to be oxidised than copper willl do the work.for example zinc
Maybe iron oxide + copper :D
This gas is oxygen.
Magnesium + copper oxide --> magnesium oxide + copper
it tarnishes and can make a dull layer of metal oxide on the surface"tarnish" or oxidation.
magnesium
Copper oxide+ Sulphuric acid ----> copper sulphate +water
copper and oxygen
Magnesium + copper oxide --> magnesium oxide + copper
the copper reacts with 02 in the air to make copper oxide, which is black 2Cu+O2--> 2Cuo
Well, what I've heard, copper oxide and carbon at high temperature will make copper metal and CO2: CuO2 + C = Cu + CO2
it tarnishes and can make a dull layer of metal oxide on the surface"tarnish" or oxidation.
Magnesium is a highly reactive metal compared to gold, silver and copper. It will form a magnesium oxide as an outer-shell when it comes to contact with oxygen in the air, and it reacts with water, creating hydrogen gas and fizzing.
Zn + HCl = ZnCl + H the will be hydrogen and it will make a squeaky pop noise
Copper Oxide
aluminum
magnesium
Copper oxide+ Sulphuric acid ----> copper sulphate +water
Hydrogen
Copper oxide, which is a compound from the two elements copper and oxygen. When copper is exposed to oxygen for a long period of time, it begins turning green. The green is Copper oxide.Copper oxide can refer toCopper(I) oxide (cuprous oxide, Cu2O), a red powder;Copper(II) oxide (cupric oxide, CuO), a black powder. (Source wikipedia)