Lava in a Cup
We had fun doing some science experiments, learning about change of state.
In this experiment we used:
When we put the water and oil in the jar the oil floated on top of the water. They didn't mix. We added food colouring so that it looked like lava. Everyone had turns putting some salt in and it sank to the bottom of the jar. Then small lumps of salt floated back up to the top and it looked like bubbling reddish lumps of lava.