Enthalpy

Enthalpy is like a measure of the energy inside a system. It's usually used to talk about chemical reactions, like burning something. Think of it like the "amount of energy" a reaction can give off. The more heat, smoke, light, and noise it has, the more energy it's releasing and the greater the enthalpy. It's like a way to measure how much energy a reaction can make, and how useful it will be.