Year 9 Elephant Toothpaste Demonstration

As part of their learning about catalysts and enzymes, Year 9 helped set up a demonstration to investigate the relative effectiveness of five different enzymes on the rate of reaction of the breakdown of hydrogen peroxide. It was fun to see the oxygen foam escaping from the measuring cylinders. Lots of volunteers were required in order to make this a fair test. Everyone needed to pour hydrogen peroxide solutions in at the same time and then all that was needed was to watch the chemical ‘race’.