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Combustion:

Rapid combination of a fuel with oxygen; produces heat, light, and new substances. Examples are Gas, Oil, or coal burning in a furnace

Electrolysis:

Use of electricity to break a compound into elements or simpler compounds. Examples are breaking down water into hydrogen and oxygen.

Oxidation:

Slow combination of a substance with oxygen. Examples are rusting of an iron fence.

Tarnishing:

Slow combination of a bright metal with sulfur or another substance, producing a dark coating on the metal. Example is tarnishing of brass.

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Jose Luettgen

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2y ago

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