1. ELECTROCHEMISTRY CHAPTER 20

2. 20.1 These types of reactions involving the transfer of electrons also have changes in energy, but instead of heat it is electrical energy. The study of these types of reactions is called electrochemistry.

3. 20.1 Electrons can be transferred through wires or through aqueous solutions. As long as there is a continuous connection, the electrons always flow in the same direction.

4. 20.1 Electrons can be transferred through wires or through aqueous solutions. As long as there is a continuous connection, the electrons always flow in the same direction. A salt bridge allows the electrons to flow from one solution to another.

5. 20.1 The anode is where oxidation occurs electrons are lost to something electrons away The cathode is where reduction occurs electrons are gained by something electrons come

7. 20.1 How about a typical battery you would use?

9. 20.1 How about a typical battery you would use?

10. 20.1 How about a car battery?

12. 20.1 How about a car battery?

13. 20.1 How about a fuel cell?

14. 20.1 How about a fuel cell?

15. 20.1 How about a fuel cell?

16. 20.1 How about a solar cell?

17. 20.1 How about a solar cell?

18. 20.1 How about a solar cell?

19. CHAPTERS 19 AND 20 TEST NOTES 15 multiple choice (4 points each) 10 short answer (2 points each) 4 short answer (5 points each) 1 extra credit (5 points)

20. CHAPTERS 19 AND 20 TEST NOTES Oxidation / reduction OILRIG or LEO the lion goes GER Assigning oxidation numbers Writing half-reactions Electrochemical cells Electrodes - anode vs cathode Movement of electrons Movement of ions through salt bridge