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A chemical explosive is a substance that produces a rapid expansion of gas through a chemical reaction. These explosives are primarily categorized into two types: high explosives (detonating) and low explosives (deflagrating).12

High explosives, such as TNT and dynamite, undergo extremely rapid decomposition, creating high pressure. Primary explosives detonate with a simple ignition source, while secondary explosives require a detonator. Low explosives, like gunpowder, burn quickly, producing lower pressures. Detonation involves a shock wave that causes self-ignition at supersonic speeds. Thermal explosions occur when heat release outpaces heat loss, leading to an accelerated reaction. Military explosives are designed for insensitivity to shock and friction while maintaining powerful shattering capabilities.2345

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