Describe the arrangement and movement of the particles in a solid, liquid and gas. In a solid ... a way of explaining something complicated. A model may be an equation, a diagram or an analogy ...

Substances can exist in three states of matter - solid, liquid and gas. All substances are made from particles, and the forces between the particles are different in solids, liquids and gases.

After viewing a model of salt, students help develop models for the processes of salt dissolving, water evaporating to form a gas, and salt re-forming as a crystal. The focus is that matter, whether ...

Although the three states of matter are solid, liquid, and gas, not all substances seem to fit perfectly into one of these groups. Take a look at the substance below and see if you can decide whether ...

In a gas, the particles aren’t touching ... changing from a solid to a liquid, for example. This basic model is, however, just that: there are many, many more states of matter out there that ...