Aimed at a foundation class Starter Activity Draw what they can remember about the states of matter, go through what the particle pictures should look like Main – Complete worksheet on properties of solids, liquids and gases -  differentiated versions Stick in particle diagrams – students add labels and arrows to show what the state changes are. Then use textbooks and what we have discussed to describe what happens to the particles during changes of state. Explain cooling curves, students fill in the blanks on their cooling curve Extension for students looking at cooling and heating curves and melting and boiling points Plenary Little quiz to finish with