8th graders finished up Physical Science with a project on experimental design. Small lab groups each designed their own experiment to determine which factors create the largest possible reaction between Mentos candy and soda. Students tested different combinations of soda flavor, Mentos flavor, number of Mentos, amount of added stevia, diameter of the nozzle, and other factors. The largest geysers rose more than 30 feet! Check out some photos and the videos to see the soda geysers in action.