As an IoP Coach in Scotland it has been a privilege to produce some resources for a course on language in Science. The talk can be downloaded from Talkphysics but here is the presentation.
3 States of Matter
Thanks to Adam P for holding the camera as I did this demo. It shows so much Science in one large boiling tube! Convection, lack of conduction, state of matter, floating and sinking, density! Hope you like it.
The gauze is there only because the ice floats on the water and the ice needs to be at the bottom for the experiment to work.