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 are arranged in a lattice structure, tightly packed and no free spaces between each particle, do not move, can only vibrate.

Liquid: particles are randomly arranged, close together, with little space bewteen them and collide frequently.

Gas: particles are far apart and at random, move quickly, high energy in all and random directions.