Production of a Gas: Controlling a Chemical Reaction

Learners mix vinegar and baking soda to produce a gas. With the addition of a bit of liquid soap, the gas becomes trapped in measurable bubbles. This way, learners can alter the amount of ingredients and evaluate the amount of gas produced based on the height the foam rises in the graduated cylinder. Learners have the opportunity to design their own experiment, control variables, and test their ideas. [Activity is publicly available through a web crawler capture on Archive.org. Activity write-up only, images are unavailable.]