Electrolysis, the process by which electric
current is passed through a substance to effect a chemical
change. The chemical change is one in which the
substance loses or gains an electron. The process is
carried out in an electrolytic cell, an apparatus consisting
of positive and negative electrodes held apart and dipped
into a solution containing positively and negatively charged
ions. The substance to be transformed may form the
electrode, may constitute the solution, or may be dissolved
in the solution. Electric current (i.e., electrons) enters
through the negatively charged electrode (cathode);
components of the solution travel to this electrode,
combine with the electrons, and are transformed. The
products can be neutral elements or new molecules.
Components of the solution also travel to the other
electrode (anode), give up their electrons, and are
transformed to neutral elements or new molecules. If the
substance to be transformed is the electrode, the reaction
is often one in which the electrode dissolves by giving up
electrons.
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Answers
Explanation:
Electrolysis, process by which electric current is passed through a substance to effect a chemical change. The chemical change is one in which the substance loses or gains an electron (oxidation or reduction). The process is carried out in an electrolytic cell, an apparatus consisting of positive and negative electrodes held apart and dipped into a solution containing positively and negatively charged ions. The substance to be transformed may form the electrode, may constitute the solution, or may be dissolved in the solution. Electric current (i.e., electrons) enters through the negatively charged electrode (cathode); components of the solution travel to this electrode, combine with the electrons, and are transformed (reduced). The products can be neutral elements or new molecules. Components of the solution also travel to the other electrode (anode), give up their electrons, and are transformed (oxidized) to neutral elements or new molecules. If the substance to be transformed is the electrode, the reaction is often one in which the electrode dissolves by giving up electrons.