Phase (matter)
Videos
In the physical sciences, a phase is a region of material that is chemically uniform, physically distinct, and mechanically separable. In a system consisting of ice and water in a glass jar, the ice c
A small piece of rapidly melting argon ice shows the transition from solid to liquid.
In thermodynamics, a critical point is the end point of a phase equilibrium curve. One example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates condi
Phase (matter)
…equilibrium. In the diagram, the blue line marking the boundary between liquid and gas does not continue indefinitely, but terminates at a point called the critical point. As the temperature and pressure approach the critical point, the properties of the liquid and gas become progressively more similar. At the critical…
Subcritical ethane, liquid and gas phase coexist. Critical point (32.17 °C, 48.72 bar), displaying critical opalescence. Supercritical ethane, fluid.
Critical carbon dioxide exuding fog while cooling from supercritical to critical temperature.