Today we received a visit from our class scientist Dr Graeme Puxty. It was a terrific session where students got to participate in two exciting science experiments. The first, called Dehydrating Sugar, involved mixing sugar with sulphuric acid. This process caused the oxygen and hydrogen to be sucked out leaving only carbon behind. We ended up with a huge lump of black coal! The second experiment, Coke Can Crush, involved heating an empty coke can with a teaspoon of water in it on a hotplate. When heated the steam pushed the air out of the can. Dr Graeme then turned the can upside down and put it into a tray of water. The steam condensed creating a vacuum, resulting in the can being crushed. Awesome! A big thanks to Dr Graeme for his time and sharing his expertise with our class.