Science Experiments

As part of our unit for this term, Our Changing World, we have been conducting some science experiments to see how things change. We made Super starch, which is a liquid and solid, we made play dough, which is a change you can't reverse, and we made a solid out of milk by adding vinegar and heating it in the microwave.
The last experiment we watched was the lemon rocket. Kathryn, the mad scientist, put lemon juice, water and bi-carb soda into a soft drink bottle and then sealed it with a cork. When the ingredients all mixed together it fizzed up and the cork flew up into the air. We watched it a second time and this time the cork went so high it hit the roof. It was a lot of fun.