soap+bubbles

__ Chemistry Behind my Experiment Continued__

When the towel soaked in soapy solution is wiped over the top of the bowl it created a kind of seal on top of the bowl which traps the carbon dioxide gas. Because the carbon dioxide gas is still being produce, the seal continues to expands which starts to cause tension on the actual soapy seal which causes a bubble top. When the tension of the carbon dioxide gas on the soap seal get to be to much the seal it self breaks releasing the carbon dioxide gas that was created.