Thurs. Nov 7, 2013
Chemistry 1 – Students played around with the PhET simulation called “Gas Properties.” We use this as an introduction before doing the gas pressure labs. For the most part I let students “play,” but I do have them answer a couple of basic questions about how the simulation works. Because gas is difficult to observe this helps visualize the particles before we go and make measurements on this invisible substance.
Physics 1 – Groups shared whiteboards showing Interaction Diagrams and Force Diagrams for two objects being pushed into one another in some fashion. At this point we focused on correctly drawing and labeling the forces present. This includes correct (on,by) notation as well as point the force arrow in the correct direction. During the discussion I asked about relative sizes of different forces, but we did not focus on that yet.
Chemistry 2 – Groups whiteboarded an acid/base neutralization reaction. The problems asked for predictions of unknown molarities or volumes needed to neutralize.