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What happens when you burn a piece of wood in a campfire?
Energy is released due to friction.
Solar energy is released.
Nuclear energy is released.
Chemical energy is released.

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Answer:

In the case of burning wood, stored potential energy (in the form of chemical energy) in the log is released due to heating by other excited atoms. This chemical reaction is called combustion and requires oxygen. Combustion changes the potential chemical energy into kinetic energy in the form of heat

Explanation:

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