Electrolysis, technique by which electric present is undergone a substance to effect a chemical change. The chemical change is one during which the substance loses or gains an electron oxidation or discount. The process is conducted in an electrolytic cell, an apparatus along with helpful and negative electrodes held apart and dipped into an answer containing positively and negatively charged ions. The substance to be converted may form the electrode, may represent the solution, or may be dissolved in the answer. Electric present i.
e. , electrons enters through the negatively charged electrode cathode; accessories of the solution travel to this electrode, mix with the electrons, and are converted decreased. The merchandise can be impartial points or new molecules. Components of the solution also travel to the other electrode anode, surrender their electrons, and are transformed oxidized to impartial aspects or new molecules. If the substance to be transformed is the electrode, the reaction is usually one during which the electrode dissolves by giving up electrons.