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Electrochemistry. What is electrochemistry? Electro: – Electricity Chemistry: – Science that studies changes in matter Electrochemistry: – Using chemical.

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Presentation on theme: "Electrochemistry. What is electrochemistry? Electro: – Electricity Chemistry: – Science that studies changes in matter Electrochemistry: – Using chemical."— Presentation transcript:

1 Electrochemistry

2 What is electrochemistry? Electro: – Electricity Chemistry: – Science that studies changes in matter Electrochemistry: – Using chemical reactions to generate electricity

3 The Potato Battery An electrochemistry example Able to generate a maximum of 0.8 V of electricity The electrons travel from the copper wire to the zinc coated nail + - 0.8

4 Problem: LCD clocks require a 1.5 V battery How could we generate more electricity? Connect multiple potatoes together! Two types of circuits: – Parallel – Series

5 In Parallel All positive terminals are connected together and all negative terminals are connected together. Increases amperage, not voltage

6 In Series Every positive terminal is connected to a different negative terminal. Increases voltage, not amperage

7 LCD clocks need 1.5 V of electricity One potato battery generates 0.8 V of electricity How should we make our potato clock?

8 Photo Credits Electrochemical Cell. Retrieved at http://sphs.spusd.net/apps/classes /show_assignment.jsp?classREC_ID=180029&start=0&pff=1&showAll=t rue&show=1000 All about circuits. Potato battery. Retrieved at http://www. allaboutcircuits. com/vol_6/chpt_3/16.html


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