Which fire burns underwater?

It is colder than in the air and oxygen appears in a different form. Under the water, it is almost impossible for fire to survive – but only almost. Underwater torches made of magnesium are the exception. At 1,000ºC, they burn so hot that the water has trouble cooling down the metal. What’s more, magnesium reacts with the water molecules, releasing the oxygen they contain. The result: the torch keeps burning underwater.

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