Cola Volcano

We add mints to diet cola in order to produce a fountain. When we add the mints to the diet cola, the porous surface of the mint causes the carbon dioxide trapped within the drink to be released rapidly, resulting in a cola volcano. Chemistry - Chemical Industries - Learning Points. Bubbles of gas will rise and escape when any pressure they are stored under is released. Nucleation sites cause bubbles of gas to gather. 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.