copper purification by electrolysis refining copper through electric current transfer

impurity system school white salt flat design negative positive education deposition impure background electrical charge purification technology vector electroplating physics electrolytic electrolysis sulfate ion cation experiment solution electron metal water electrochemical chemical laboratory science cathode electrolyte battery electrode copper chemistry reaction electric oxidation anode beaker diagram reduction refining current transfer involves ions pure brand font presentation line text document drawing cartoon advertising lighting screenshot multimedia circle plan label map