CHEMISTRY – Great job on the lab today. So did you see the Law of Conservation of Mass today? Why not? What are you going to do differently in the lab tomorrow, and why do you think it will work? Here’s the the format for Part 1 and 2 of the lab write up, just in case you didn’t get it in class today: CONSERVATION OF MASS Lab Report. Don’t forget – short classes tomorrow, so you need to come to class moving quick like a bunny!