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Combustion reaction, or decomposition reaction.

Gunpowder explodes because the carbon and sulfur are burned rapidly making lots of expanding gases.

Nitroglycerine explodes because the molecules are unstable and decompose into more stable molecules, which are gases and must expand rapidly because any gas occipies more than 1000 times the volume of the liquid it comes from.

Atomic bombs are neither ... they release so much energy that they heat the air to nearly 1 million degrees and this causes the rapid expansion known as an explosion.

So maybe what you are looking for isn't a chemical answer, but just a very radip expansion of gases.

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12y ago

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