Which category of substances includes pyrotechnics?

The category of substances that includes pyrotechnics is explosives. Pyrotechnics are specially formulated chemical compositions that produce heat, light, sound, gas, or a combination of these effects through a rapid chemical reaction. This makes them classified as a type of explosive material since they are designed to undergo combustion and release energy in a controlled or explosive manner.

Explosives can come in various forms, including those used for fireworks, signaling devices, and military ordnance, all of which rely on a swift reaction to achieve their intended effect. Understanding this classification is crucial, as it not only governs how these materials should be handled and stored but also highlights the safety protocols necessary to prevent accidents during their deployment.

The other categories listed, such as non-flammable materials, flammable solids, and corrosive materials, do not encompass the unique characteristics of pyrotechnics, which are defined by their explosive nature and the energy they produce.