1. Pick any solid you want, describe how the atoms are arranged inside of and describe their speed of movement. Next, explain how you would convert that solid into a liquid and then how the atoms would be arranged and moving.
2. Pick a liquid and describe how the atoms are arranged and moving. Next, explain how you would change that liquid into a solid, describing the arrangement and speed of the atoms.
3. Pick a gas and describe how the atoms are arranged and moving. Next describe how you could convert that gas into a solid and then describe the movement and arrangement of the atoms.