Burning Bubbles

We investigate the properties of two types of gas bubbles: methane gas bubbles and bubbles of the gas we breathe out. The air-filled bubbles sink and we are unable to set them alight, while the methane bubbles float upwards and are highly combustible.

Chemistry - Periodic Table - Learning Points.
Air consists mainly of nitrogen and some oxygen.
Methane is a good fuel.
Methane is less dense than air.
Oxygen must be present for a substance to burn.
Animals breathe out carbon dioxide during respiration.

A Twig Experiment Film.
Let students experience real experiments in lab conditions anywhere, from setup, method all the way through to analysis and real-world application.