fuel

Also known as combustibles, combustible material, combustible matter

thumb|upright=1.35|Firewood was one of the first fuels used by humans.

AI overview

Fuel is a material that can be burned to produce energy, with firewood being one of the earliest examples used by humans. It matters because fuel provides the energy needed for heating, cooking, and powering machines and vehicles that are essential to modern life.

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Image: Fire, Fireplace, Rostov-on-Don, Russia.jpg

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Commons category: Fuels
Commons gallery: Fuel

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~21 min read

Article

17 sections

Contents

History
Chemical
Solid fuel
Liquid fuels
Fuel gas
Biofuels
Fossil fuels
Energy
Nuclear
Fission
Fusion
Liquid fuels for transportation
See also
Footnotes
Works cited
References
Further reading

thumb|upright=1.35|Firewood was one of the first fuels used by humans.

Fuel are any materials that can react with other substances to release energy as thermal energy or to be used for work. The concept was originally applied solely to those materials capable of releasing chemical energy but has since also been applied to other sources of heat energy, such as nuclear energy (via nuclear fission and nuclear fusion).