1.1 understand the arrangement, movement and energy of the particles in each of the three states of matter: solid, liquid and gas

Solid:
 As shown in the diagram, the particles in the solid are vibrating on a fixed spot. They have the least energy in comparison to the liquids and gases. Solids are held together by strong inter-molecular forces of attraction and are all touching each other

Liquid:

As with solids, all the particles in a liquid are touching each other. However, they can flow and will take the shape of their container. The inter-molecular forces of attraction are weaker than in a solid. The particles in a liquid have more energy than the molecules in a solid.

Gas:

Gas' have no inter-molecular forces of attraction meaning they aren't touching and will fill up the entire container. They have the most energy and can be compressed while solids and liquids can't.