Phase Diagrams

Definition

A phase diagram is a graphical representation of the physical states of a substance under different temperatures and pressures.

Related terms

Phase Transition: This refers to the change from one state of matter (solid, liquid or gas) to another. It's like moving from one city to another on our map analogy.

Critical Point:

This is the point on the phase diagram where both liquid and gaseous forms of a substance coexist. It's like being at the border between two cities - you're not fully in either one.

Supercritical Fluid:

This is any substance at a temperature and pressure above its critical point. It exhibits properties of both liquids and gases. Imagine it as an entirely new city that has features from two other cities.