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BJU Chemistry Ch 17
Bob Jones Chemistry - Chapter 17
| Term | Definition |
|---|---|
| anode | The electrode at which oxidation occurs during an electrochemical reaction; the electrode that attracts anions in electrolytic cells and repels electrons in voltaic cells. |
| battery | One or more voltaic cells arranged to produce electricity. |
| cathode | The electrode at which reduction occurs during an electrochemical reaction; the electrode that attracts cations in electrolytic cells and attracts electrons in voltaic cells. |
| electrochemical cell | An apparatus consisting of two electrical contacts (electrodes ) that are immersed in an electrolyte solution and joined by a wire. |
| electrochemistry | The field of chemistry that involves redox reactions and electricity; the interactions between chemical and electrical phenomena. |
| electrode | A conductor of electricity that allows a current to enter or leave an electrolytic cell (or other apparatus). |
| electrolysis | A process that uses electricity to force an otherwise nonspontaneous chemical reaction to occur in an electrochemical cell; the separation of a compound into simpler substances by an electrical current. |
| electrolyte | A substance that releases ions and conducts electricity when it dissolves in water. |
| electrolytic cell | A type of electrochemical cell that uses electricity to produce a chemical reaction. |
| electroplating | An electrochemical process in which metallic ions of a usually more expensive metal coat a cheaper metal using an electrical current. |
| fuel cell | A class of highly efficient batteries that operate with a continuous supply of reactants for fuel from an external source from which the products are continually removed. |
| nonelectrolyte | A substance that will not conduct electricity when melted or dissolved because it does not release ions. |
| oxidation | A chemical reaction in which an atom's electrons are lost and its oxidation number increases. |
| oxidation-reduction reaction | Any chemical reaction in which electrons transfer or shift; also called a redox reaction. The shift of electrons is shown by changes in oxidation numbers. |
| oxidizing agent | The atom or ion that receives electrons during a redox reaction; the substance that causes other substances to be oxidized; the substance that is reduced. |
| reducing agent | An atom or ion that donates electrons during a redox reaction; the substance that causes other substances to be reduced; the substance that is oxidized. |
| reduction | A chemical process in which an atom gains electrons and decreases its oxidation number. |
| salt bridge | A tube of electrolytic gel that connects the two half-cells of a voltaic cell and allows the flow of ions. |
| voltaic cell | A type of electrochemical cell that uses a spontaneous redox reaction to produce electricity. |
Created by:
marchscience
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