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Chemistry

How an Electrochemical Cell Converts Chemical Energy to Electricity

Quick fact

A typical AA alkaline battery works for hours by using two different metals and a chemical reaction that literally pushes electrons out of one terminal and pulls them into the other, creating a voltage of about 1.5 volts without ever needing to be plugged in.

Why this is interesting

You click a light switch and a flashlight glows, but what actually happens inside the battery to push those electrons along the wire?

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How an Electrochemical Cell Converts Chemical Energy to Electricity

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