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Chemistry: Challenges and Solutions

How the Battery Works (animation)

The batteries provide energy through a spontaneous chemical reaction called oxidation-reduction, or redox, which involves a transfer of electrons. During this process, one substance must gain electrons, which we call reduction, while another loses electrons, which we call oxidation. This movement of electrons creates an electric current which can power a device.

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Chemistry: Challenges and Solutions


Produced by the Harvard-Smithsonian Center for Astrophysics. 2014.
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