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copper oxide. when it reacts with the oxygen in the air it produces copper oxide
copper oxide
YES copper reacts with oxygen giving various compound of copper like cuprous oxide(red oxide),cupric oxide(black oxide)!! for eg:Cu+O2(temp>1100 degree C)=2Cu2O Cu+O2(TEMP
Black copper oxide is basic innature.
Coal
The substance in the air is oxygen. Copper + oxygen= copper oxide.
copper oxide. when it reacts with the oxygen in the air it produces copper oxide
The metal might be copper. When copper is heated, it reacts with oxygen in air forming copper oxide which is black in colour.
The zinc is either contaminated with copper, or the copper is depositing so quickly onto the zinc that it is in a non crystalline structure and therefore appears to be black. Try melting some of the black stuff with a blowtorch and see what happens.
copper oxide
YES copper reacts with oxygen giving various compound of copper like cuprous oxide(red oxide),cupric oxide(black oxide)!! for eg:Cu+O2(temp>1100 degree C)=2Cu2O Cu+O2(TEMP
the copper reacts with 02 in the air to make copper oxide, which is black 2Cu+O2--> 2Cuo
Black copper oxide is basic innature.
Coal
The copper wire glows red. Once it cools...the copper reacts with the air to produce copper(II) oxide. This is shown by the black tarnish on the copper wire.
Copper wiring turns black due to oxidation. It is the air reacting with the metal. Copper wiring also sometimes turns green.
The black coating you see is a coating of copper oxide, which forms when the hot metal reacts with air. no air can reach the inside, so it does not react to form black copper oxide.