1. CJ McClave

2. Deposition of a thin layer of metal on a surface by an electrical process involving oxidation-reduction. Electroplating is often also called "electrodeposition“ (ElectroChem)

3. Process used to cover zinc with copper in making coinage involves using direct-current electricity, which causes redox reactions to occur between the metal and a metal-ion solution.

4. Cations of most metallic elements can be reduced. “It’s used in abrasion and wear resistance, corrosion protection, lubricity, aesthetic qualities” and others (Wikipedia).abrasion corrosionlubricity

7. Electroplating is related to, water softening, hydro metallurgy, electrometallurgy, and pyrometallurgy.