TED-Ed: Is fire a solid, a liquid, or a gas? - Elizabeth Cox

The video explores the nature of fire, emphasizing its sensory experience rather than its classification as a state of matter. Fire is not solid, liquid, gas, or plasma but a chemical reaction called combustion. This reaction involves fuel, heat, and oxygen, producing carbon dioxide, water vapor, and light. The video explains how flames get their shape and color, influenced by temperature and molecules. It also discusses how fire sustains itself and eventually extinguishes when fuel or oxygen runs out.

What new insight or understanding did you gain from this video?