We had lots of fun investigating gasses and the forces that they create.
We made our own giant bubble wands and tried to make bubbles. We found out that bubbles are always spherical because the air and bubble liquid act as balanced forces against each other.
Vitamin C Rockets
We also investigated what happened when too much gas filled a container. We added water to a vitamin C tablet. The tablet dissolved and created a gas. As the gas built up, the pressure caused the lid of the canister to pop off.