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

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7 thoughts on “Chemistry 8-22-11 Chemical & Physical Changes

  1. I have always had trouble with deciding whether something is a chemical or physical change but the thing you did with the brurning paper really helped me! thank you!

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