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Regents Chem - Redox

Oxidation LEO or OIL. Loss of electrons. Charge increases
Reduction GER or RIG. Gain of electrons. Charge decreases.
Oxidation agent causes another substance to oxidize (lose electrons) so it gains those electrons and reduces.
Reducing agent causes another substance to reduce (gain electrons) so it loses those electrons and oxidizes
Electrochemical cell device that uses redox reactions to either produce or use electricity
Electrolytic cell not spontaneous. Needs a battery to force a reaction to occur. Could be electroplating or electrolysis of a compound.
Voltaic cell is spontaneous. Produces a positive voltage. Includes 2 beakers and a salt bridge
Salt bridge allows migration of IONS in a voltaic cell.
Wire allow movement of ELECTRONS in a voltaic cell.
Table J reactivity table. Metals that want to oxidize are at the TOP and can replace any metal below them.
Anode (an ox) metal piece where oxidation takes place. It is negative in the spontaneous set up and positive when there IS a battery.
Cathode (red cat) piece of metal where reduction takes place. It is positive in the spontaneous voltaic cell and negative in electrolytic (when there IS a battery)
Created by: etucci