Elephant Toothpaste Experiment

Last week we had Ms Davis and Ms Dudding show us an experiment called " Elephant Toothpaste ". They told us about a physical reaction and a chemical reaction. Physical reaction means the experiment is reversible, so it can change back, for example water can freeze and melt back to water. Then a chemical reaction is when it is changed, it is irreversible. Like a cake, by the time you have mixed and baked the cake, it won't change back into the way it was. As we watched the elephant toothpaste, we found out it didn't reverse back, this experiment was a chemical reaction.