Ocean Acidification/Acid Rain Demonstration with a Soda Stream part of Teach the Earth:Teaching Activities
Using a SodaStream or other household carbonation appliance to teach about acidification and its effects on the environment.

Tutorial Exploring the Impact of Initial Moles of Reactants on Reactant Progress part of Teach the Earth:Teaching Activities
When studying the Law of Mass Action, students usually understand how increasing temperatures can increase the rate of a reaction but often can't visualize the impact of increases in the mass of reactants. ...