Copper wiring turns black due to oxidation. It is the air reacting with the metal. Copper wiring also sometimes turns green.
Oxygen turns copper green.
copper turns to blue-green copper oxide.
On the copper surface basic copper carbonate is formed.
It turns into a white powder and when water is then again added to the deydrated copper sulphate it turns back to its original colour
it's a physical reaction because you can get it back to copper oxide
To separate copper from its ore, the process is called smelting. The copper and ore are heated and the copper turns to liquid which is then poured from the smelter.
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.
Yes it turns green
It turns greenish.
Physical Changes
NO! copper turns green