How can you obtain pure copper from an impure sample?

Copper is purified by electrolysis. Electricity is passed through solutions containing copper compounds, such as copper(II) sulfate. The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is made from pure copper. On Connecting the electrodes of the cell, Copper is transferred from an impure anode to the cathode of the electrolytic cell. The insoluble impurities fall to the bottom. The copper produced by this process is 99.99%, pure copper.