Unit 13: Electrochemistry

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Unit 13 Notes

Unit 13 Class Packet

voltaic cell modeling activity

electrolytic cell modeling activity

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Regents Core Curriculum

• An oxidation-reduction (redox) reaction involves the transfer of electrons (e-). (3.2d) 
  
• Reduction is the gain of electrons. (3.2e) 
  
• A half-reaction can be written to represent reduction. (3.2f) 
  
• Oxidation is the loss of electrons. (3.2g) 
  
• A half-reaction can be written to represent oxidation. (3.2h) 
  
• In a redox reaction the number of electrons lost is equal to the number of electrons gained. (3.3b) 
  
• Oxidation numbers (states) can be assigned to atoms and ions. Changes in oxidation numbers indicate that oxidation and reduction have occurred. (3.2i) 
  
• An electrochemical cell can be either voltaic or electrolytic. In an electrochemical cell, oxidation occurs at the anode and reduction at the cathode. (3.2j) 
  
• A voltaic cell spontaneously converts chemical energy to electrical energy. (3.2k) 
  
• An electrolytic cell requires electrical energy to produce chemical change. This process is known as electrolysis. (3.2l)
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