Name the compound responsible for the green depoist on the surface of the copper
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Copper turns green because of a process known as oxidation which is the removal of electrons from the substance. Specifically, copper turns green because of something known as copper carbonate. This is the substance that is found on top of copper–whether they be copper pipes, pennies, statues or anything else. So, the cause of copper turning green is copper carbonate. However, the big question is: why does copper carbonate appear?
When a metal comes into contact with air or water, it undergoes environmental changes. In other words, it might rust or it might tarnish. Copper is a metal that tarnishes and turns green. Iron rusts because rust is iron oxide. When you think of what causes iron to rust–rain and wind–you can understand easier what causes a copper penny, for example, to rust.
An important thing to consider, though, is that oxidation is a process. The penny, for example, won't turn green overnight. However, if it gets wet, nothing will happen for a little while. As time goes on, though, it might start turning brown and then black. And then, after a while, shades of green will begin appearing. These shades of green are the build up of copper carbonate...
When a metal comes into contact with air or water, it undergoes environmental changes. In other words, it might rust or it might tarnish. Copper is a metal that tarnishes and turns green. Iron rusts because rust is iron oxide. When you think of what causes iron to rust–rain and wind–you can understand easier what causes a copper penny, for example, to rust.
An important thing to consider, though, is that oxidation is a process. The penny, for example, won't turn green overnight. However, if it gets wet, nothing will happen for a little while. As time goes on, though, it might start turning brown and then black. And then, after a while, shades of green will begin appearing. These shades of green are the build up of copper carbonate...
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