👉 An extreme fluid is a substance that exhibits properties of both liquids and gases, but in its most extreme form, it behaves more like a gas than a liquid. This unique state is due to its extremely low density and high kinetic energy, allowing it to expand significantly when heated or decrease in pressure. Unlike regular liquids, which maintain a fixed volume, extreme fluids can fill any container they are placed in and expand to occupy the entire space, much like a gas. This behavior is observed in substances such as supercritical fluids, which exist at conditions of high temperature and pressure where the distinction between liquid and gas phases disappears entirely.
