heat of transformation

In an electronic conductor an electric current is the result of an anet movement of electrons in the structure of the conductor when an electrical potential is applied . Electrons have negligible mass compoared with the remainder of the structure and the flow of electricity is not accompanied by a significant movement of matter.Electrolytic coductors contain mobile ions which carry an electrical charge .when an electrical potential is applied these ions will move in the direaction appropriate to their charge.As in electronic conductance the electric current is a movement of electrical charge but this time the charge is carried by ions of significant mass and electrolytic conductance is accompanied by mass transfer conductors may exhibit acombination of electronic and electrolytic conduction but frequently the proportion of one type is so dominating that it is permissible to assume that the conduction is entirly by the dominating mechanism.This property of electrolytic conduction plays amajor role in some of processes and phenomena important to the metallurgist -corrosion and oxidation of metals, electroplating , electropolishing electrolytic extraction and refining of metas for example,