Chapter 8 Chem

Chapter 8 Chem - 1 Chapter 8 Energy from Electron Transfer...

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Unformatted text preview: 1 Chapter 8 Energy from Electron Transfer Energy From Electron Transfer Introducing Topics of Discussion 8.1 Electrons, Cells, and Batteries: The Basics 8.2 Some Common Batteries 8.3 Lead-Acid (Storage) Batteries Announcements H.W. problems: 1,2,3,6,7,9, and 13 Connecting With Your Mind What is the energy source of I-Pods, computers, cell phones, and automobiles? What is a battery (galvanic cell)? How? 2 Redox Reactions _____________ are spontaneous chemical reactions that release energy that can be converted to electricity Oxidation Reduction Remember: Nickel-Cadmium Battery The electron transfer process involves two changes: the cadmium is ________, and the nickel is _________. Each process is expressed as a half-reaction: Oxidation half-reaction: Reduction half-reaction: Overall cell reaction: To enable this transfer, _________ (electrical conductors) are placed in the cell as sites for chemical reactions. Nickel-Cadmium Battery 2 Redox Reactions _____________ are spontaneous chemical reactions that release energy that can be converted to electricity Oxidation Reduction Remember: Nickel-Cadmium Battery The electron transfer process involves two changes: the cadmium is ________, and the nickel is _________. Each process is expressed as a half-reaction: Oxidation half-reaction: Reduction half-reaction: Overall cell reaction: To enable this transfer, _________ (electrical conductors) are placed in the cell as sites for chemical reactions. Nickel-Cadmium Battery 3 Your Turn 8.2, Electrons in Half-Reactions Which of these represents oxidation half-reactions? Which represent reduction half-reactions? What is the basis for your decision?...
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This note was uploaded on 05/05/2008 for the course CHEM 104 taught by Professor Splawn during the Spring '08 term at Wofford.

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Chapter 8 Chem - 1 Chapter 8 Energy from Electron Transfer...

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