Particle Diagrams

Solids, liquids and gases – and what happens when you heat them.

Solid
Fixed pattern, touching, vibrating on the spot
Liquid
Touching, but sliding over each other
Gas
Far apart, fast, filling the container

How to use

  1. 3 states shows a solid, a liquid and a gas side by side.
  2. Heat it up shows one container. Drag the temperature slider, or hold Heat / Cool, to melt, boil, freeze or condense it.
  3. Switch between Atoms and Molecules. In molecules mode, watch the bonds inside each molecule: they stay joined when it melts or boils.
  4. Use Pause to freeze the picture while you explain.

Key (molecules)