Samuel enjoyed this demonstration - everyone thought he was SO brave - but he has done this experiment at home and knew that the pressure would hold the lid on!
This was fun to watch as they showed us how things expand when there is little oxygen - like in space!
This reacted to the CO2 in the science guy's breath. The other didn't change colour since it wasn't CO2.
More fun experiments. It's always so much fun when things involve flaming fire balls!
Science is always so much fun!