Question

the method of purifying method metals by passing electricity is called

Answer 1

electrolysis is the method of purifying metals by passing electricity

Answer 2

The process is Electrolyis.

Eletrolysis uses a compound that has the impurities of one ore in its compound as an electrolyte, and another pure metal/ non-metal as an electrode. The ore is also acts an an electrode. During electrolysis,the impurities is the compound dissolve in the electrolyte and move toward the other electrode. This makes the ore break down and leaves pure metal from the ore.