Where do the bubbles come from when we mix vinegar and baking soda? This week in lab we reviewed the baking soda and vinegar experiment. When we were looking at this experiment, we wanted to prove that matter is conserved. What we would have our students do is observe by wight out the amount of baking soda and vinegar, then weighing it after it's combined. Students can also observe by feeling the temperature change and watching the bubbles. When we did this experiment, we have: Vinegar: 24.7 Baking soda: 18.0 Mixing: ending at 42 We started to wonder what happened to the extra amount of mass. Then we realized that we did not close the bag fast enough. We wanted to improve our experiment by getting the same exact mass that is supposed to be conserved. How we improved our experiment by adding baking soda on one side of the bag, and vinegar on the other. We then closed the bag before we mixed them together so we would not lose any extra mass. Jeff mentioned in the lab how...