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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)