What process coats objects with a very thin coating of metal?

What process coats objects with a very thin coating of metal?

• A. Electrolysis
• B. Electromagnetism
• C. Electroplating
• D. Electroding

Answer: (C)

Coating objects with a very thin layer of metal is done by electroplating. In this process, electrical current is used to move metal ions from a solution onto a conductive surface. The object to be plated serves as the cathode, while a piece of the plating metal acts as the anode, all submerged in an electrolyte containing the metal ions. When current flows, the metal ions gain electrons at the object's surface and deposit as a metal coating, producing a uniform, adherent finish. The thickness is controlled by the plating time and the current. This is a specific application of electrolysis; electromagnetism deals with electric and magnetic fields at a broader level, and electroding isn’t a standard process term.

Coating objects with a very thin layer of metal is done by electroplating. In this process, electrical current is used to move metal ions from a solution onto a conductive surface. The object to be plated serves as the cathode, while a piece of the plating metal acts as the anode, all submerged in an electrolyte containing the metal ions. When current flows, the metal ions gain electrons at the object's surface and deposit as a metal coating, producing a uniform, adherent finish. The thickness is controlled by the plating time and the current. This is a specific application of electrolysis; electromagnetism deals with electric and magnetic fields at a broader level, and electroding isn’t a standard process term.