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Power Cells and Batteries

Electrochemical Reactions. Power Cells and Batteries. Parts. Anode: Electrons are lost due to oxidation. (negative electrode) Cathode: Electrons are gained due to reduction. (positive electrode) Electrolyte: The medium that carries the ions or electric charges.

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Power Cells and Batteries

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  1. Electrochemical Reactions Power Cells and Batteries

  2. Parts Anode: Electrons are lost due to oxidation. (negative electrode) Cathode: Electrons are gained due to reduction. (positive electrode) Electrolyte: The medium that carries the ions or electric charges. Separator: Keeps electrodes from touching. (cloth or paper) Collectors/electrodes: collects current to be used in the outside circuit.

  3. Electrochemical reaction e- e- SO4 -2 Cu+2 Zn+2 SO4 -2 e- e- Zn Cu Zn+2 Cu+2 SO4 -2 SO4 -2 Zn+2 Gain of electrons REDUCTION Loss of electrons OXIDATION

  4. http://www.youtube.com/watch?v=0oSqPDD2rMA Electrochemical Cell

  5. http://www.magnet.fsu.edu/education/tutorials/java/daniellcell/index.htmlhttp://www.magnet.fsu.edu/education/tutorials/java/daniellcell/index.html Simplified Battery

  6. http://www.youtube.com/watch?v=edMN7P5oCaY Voltaic Pile

  7. Power cell All of the “batteries” pictured are really just single POWER CELLS. They have only one cathode and one anode. All of these power cells have a voltage of 1.5 regardless of size!

  8. Battery A true BATTERY is actually several power cells connected together. A 9-volt battery is six 1.5V power cells connected to each other. A car battery is a combination of enough power cells to equal 12 volts.

  9. http://www.youtube.com/watch?v=4IgHj2Uim_0&feature=related How does a car battery work?

  10. Using power cell to make a battery Most electronic devices run on a combination of power cells. This combination can increase the life of the battery or increase the voltage supplied to the circuit.

  11. Time for you to make a battery

  12. Electricity Terms

  13. http://www.youtube.com/watch?NR=1&feature=endscreen&v=iRnZNq_6ijIhttp://www.youtube.com/watch?NR=1&feature=endscreen&v=iRnZNq_6ijI http://www.youtube.com/watch?NR=1&v=sDTUEBNJhv8&feature=endscreen http://www.youtube.com/watch?v=aaAHq1yh1vk&NR=1&feature=endscreen http://www.youtube.com/watch?v=iubyEuNbyjw&NR=1&feature=endscreen http://www.youtube.com/watch?NR=1&v=y2RQttpahqk&feature=endscreen Tesla – Let’s talk about electricity and current

  14. http://www.youtube.com/watch?v=IpaEGhjpZgc&feature=related http://www.youtube.com/watch?v=nZjMARe6APs&feature=relmfu Electricity how our grandparents learned it

  15. Electrical current that flows only in one direction (D.C.) Electrical current that flows in one direction then the opposite direction (A.C.) Direct Current vs. Alternating Current

  16. I Quantity of electrons that pass a given point in a given time Ampere 1 ampere is 6,250,000,000,000,000,000 electrons passing a point in 1 second 1 amp = 1,000 mA Current

  17. V The electrical pressure or force Sometimes referred to as electric potential The difference in electrical potential energy between two points Measured in volts voltage

  18. The work performed by an electrical current • Units: Watts • The power of a Direct Current is its voltage times its current • Power is also equivalent to energy per unit time and also work per unit time P=VxIor P= energy/time or P =work/time *energy would = P * t and units are Watt•hr or kW•hr Power

  19. R The degree to which a conductor hinders the charge flow Ohm A potential difference of 1 V will force a current of 1 amp through a resistance of 1 ohm Resistance

  20. V = I x R Ohm’s law

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