Blog Post Week 15
Week 15 Today in lab we focused on the last experiment we tried to get introduced to chemistry: baking soda and vinegar. With this, we kept in mind our observations from last time: the cold temperature, the bubbling reaction, and evaporation. This time we wanted to be able to prove that a chemical reaction or phase change does not change the amount of matter. Therefore we took measurements and tried different ways to make sure all of the gas was captured. Baking soda and vinegar Why did the bag expand? Why did it get cold? Why did it fizzle? Why did it stop? How do we prove to kids that when a log burns, its matter is conserved? etc. To begin this experiment we did it the same as we did during our first time; we added a bunch of baking soda to the bag, then just added a bunch of vinegar and closed the bag to observe the chemical reaction. We realized this experiment would not prove to students that matter is conserved because we couldn't close the bag fast enough. All...