Yes, fire does use energy, specifically in the form of heat and light. When a substance burns, a chemical reaction called combustion occurs. This reaction requires a fuel source, such as wood or gasoline, and an oxidizer, usually oxygen from the air.
During combustion, the chemical bonds in the fuel are broken down, and energy is released in the form of heat. This energy is what gives fire its warmth and is responsible for the light it emits. In essence, fire transforms the stored chemical energy in the fuel into thermal energy, which we perceive as heat. So, when we say that fire uses energy, we’re really talking about the energy it generates through the oxidation of materials.