I was tasked with the job of running a session with a health related theme. I decided to compare the energy in different crisps, with the primary objective being purely to demonstrate what an good source of energy they are.
The photographs show 2.5g of various crisps being burnt under 20 cm3 of water. Whilst we tried to ensure the flame tickled the test tube as much as possible, collecting accurate results wasn’t the primary objective for this lesson.
(If we had wanted to collect more accurate data we could have made calorimeters like this made by students of Phillip Cook in the USA)