| A | B | 
| voltaic cells | any device that converts chemical energy into electrical energy or electrical energy into chemical energy | 
| cathode | the electrode at which reduction occurs | 
| dry cell | a commercial voltaic cell in which the electrolyte is a moist paste | 
| battery | a group of voltaic cells that are connected together | 
| electrochemical cell | electrochemical cells used to convert chemical energy into electrical energy | 
| anode | the electrode at which oxidation occurs | 
| battery | the measure of a cell's ability to produce an electric current | 
| electrical potential | the tendency of a given half-reaction to occur as a reduction | 
| reduction potential | a reaction having a positive cell potential | 
| spontaneous reaction | the standard reduction potential of the hydrogen electrode | 
| 0.00 V | the difference between the reduction potentials of the two half-cells | 
| cell potential | the process in which electrical energy is used to make a nonspontaneous reaction go forward | 
| electrolysis | an electrochemical cell used to cause a chemical change through the application of electrical energy | 
| electrolytic cell | a concentrated solution of sodium chloride | 
| brine | the deposition of a thin layer of metal on an object in an electrolytic cell | 
| electroplating | the deposition of a thin layer of metal on an object in an electrolytic cell | 
| electro refining | an electrolytic method for obtaining ultrapure metals | 
| salt bridge | tube containing a strong electrolyte used to balance charges between the half-cells of a voltaic cell |