On Friday, pupils in Years 3 and 4 discovered how chocolate can change state from a solid to a liquid and then back again and this rate of change depended on the temperature applied to it. We were going to do the experiment with gold but sufficient funds couldn’t be found and we thought that temperatures in excess of 1000 degrees Celsius might pose a risk.
The pupils worked really well in small groups and were able to identify risks and hazards in their working environment.
We discovered that it was really hard to maintain the water in our saucepans at a set temperature and tried to think of innovative ways to do this to improve our fair testing ideas.
The pupils were allowed to take the chilled chocolate in the shape of crispy cakes home at the end of the day.