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 Electroplating 

Electroplating is the use of a solution of metal salt and electricity to coat an electrically conducting item with a layer of the metal making up the metal salt. Electrodeposition is the process by which electroplating is performed.

The way in which this works is analogous to a battery acting in reverse. The item to be coated is placed into a container containing a solution of one or more metal salts. The item is connected to an electrical circuit. The item may form the anode or the cathode of the circuit. When an electrical current is passed through the circuit, the electrons passing through the solution cause a chemical reaction. The metal is reduced to its ground state, and is thus the pure metal, and not a metal compound. This metal will deposit on the item, covering it in a layer of that metal.

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