Chemistry 1010

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Chemistry 1010

• Batteries and Light

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Demo

• Ag Cu ? Cu2 Ag penny in
  AgNO3
• Zn Cu2 ? Zn2 Cu
  Zinc in a copper sulfate solution

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Batteries

• Explain in Great Detail how a wet electrochemical
  (battery) cell works!!!!

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What About A Flashlight Battery

• Zn 2 MnO2 H2O ? Zn2
  Mn2O3 2 OH-

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Other Common Batteries

• Mercury cell Zn / HgO calculators, hearing aids
• Silver Oxide Zn / Ag2O watches, cameras
• Nickel Cadmium Cd / NiO rechargeable batteries
• Lithium cells Li / MnO2 pacemakers

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How Does a Car Battery Work

• Same as an electrochemical cell but reversible
• Pb PbO2 H2SO4 ? 2PbSO4 2H2O
  2e-
• Add electricity
• 2PbSO4 2H2O 2e- ? Pb PbO2
  H2SO4

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Electric Cars

• Lets Talk About It

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The Color of Things
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