Chemistry L32

• Anode


  the electrode where oxidation occurs
• Cathode


  the electrode where reduction occurs
• Electrochemical cell


  a device that transforms chemical energy into electrical energy
• Electrode


  solid metal conductor used to establish electrical contact with the nonmetallic part of a circuit (the electrolyte)
• Electrode potential


  a potential to accept electrons
• Electrolytic cells


  convert electrical energy into chemical energy; use outside energy; the reactions are nonspontaneous
• External circuit


  movement of electrons across the wire
• Internal circuit


  movement of ions across the porous barrier
• Voltaic cells


  convert chemical energy into electrical energy; involve spontaneous redox reactions