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

Solid:
- Particles closely packed, arranged in rows
- All touching
- Hardly move, only vibrate
- Little energy
- Very strong forces of attraction

Liquid:
- Particles mostly touching, pretty close
- Move past each other
- Some energy
- Relatively strong forces of attraction

Gas:
- Particles very far apart
- Move very fast
- Lots of energy
- Weak forces of attraction