What is the term for materials that yield oxygen or gases during a chemical reaction but are not combustible by themselves?

The term for materials that yield oxygen or gases during a chemical reaction but are not combustible on their own is "oxidizing agents." These substances play a crucial role in combustion and fire behavior because they can support and enhance the burning of other materials. Oxidizing agents release oxygen, which fuels the combustion process, allowing other materials that are combustible to burn more readily or intensely.

For example, substances like hydrogen peroxide or potassium nitrate can serve as oxidizers, facilitating reactions with flammable materials. Without the presence of an oxidizing agent, combustion may be difficult or impossible, highlighting the essential role these agents play in fire dynamics.