Chemistry 8-22-11 Chemical & Physical Changes

CHEMISTRY – Happy Homecoming! How’d you like playing with precipitates? Here’s the lecture on chemical and physical changes, and also on the laws of conservation of mass and energy. Good job on tracing the energy transformations from one form to another. Make sure you can apply all this on the test (and in life!). 🙂

flickr photo by Roger Smith

Hon Chemistry 9-15-11 Matter and Its Properties

HON CHEMISTRY – Hey guys, here’s the lecture from Thursday on what exactly we’ll be studying in chemistry. I think most of this was review for you?? Make sure you have the vocab down, and be sure you’re able to apply what you learned today. Can you tell the difference between quantitative and qualitative properties, physical and chemical changes, etc.? Is a reaction endothermic or exothermic – how can you know? Let’s play around with the Law of Conservation of Mass next week!