This activity uses fire. Special caution is required. The Cartesian Diver K. David Pnkerton, J. Chem. Diver could be demonstrated. Requires access to water, hot water, and ice.
Optional extension requires additional time and materials.
Bubble, Bubble, Toil and Trouble Journal Staff, J. Chem. Yes, if solutions are prepared in advance. Requires access to water. Preparation of bubble solutions can be messy. Solutions need to be prepared in advance.