What is the term for materials that can easily ignite and sustain combustion?

The term for materials that can easily ignite and sustain combustion is flammable. Flammable materials are characterized by their ability to catch fire quickly and to continue burning once ignited. This quality is determined by the chemical composition of the material, its physical state (solid, liquid, or gas), and its temperature.

In contrast, non-combustible materials do not ignite or burn when exposed to fire or high temperatures, making them suitable for fire safety applications. Stable materials are those that do not readily undergo chemical change or decomposition under normal conditions, and inert materials are typically chemically inactive and do not readily react with other substances. Understanding the different classifications of materials regarding fire safety is crucial, especially in logistical operations where the handling and storage of various materials are involved.