INSERT [STATE_CI_03 - particle diagram of a solid, liquid and gas] In the solid state the particles of the substance are packed tightly in fixed positions and are all touching. The particles move ...

are used in science to help explain scientific concepts. The particle model is the name for the diagrams used to draw solids, liquids and gases. In the model, the particles are shown as circles or ...

Some of the particle diagrams shown in the image seem to imply that there are large gaps between the particles in a liquid. How could you help students to understand that large gaps do not exist ...