Changing States – Melting Chocolate, what happens when it cools? Is it a reversible change? Do all foods change states? Fry or scramble and egg – Irreversible change. https://www.stem.org.uk/resources/community/collection/357458/charlie-and-chocolate-factory-states-matter

https://www.youtube.com/watch?v=lLKJuvjIFgQ – Brian Cox school experiments 

https://www.youtube.com/watch?v=tV_JaJBkvWU grow your own rock candy.

There are 3 sheets below to support this work.