Students will become CSI and work to solve a mystery by identifying a variety of white powders. Students will distinguish between a physical and chemical change by observing chemical reactions first hand. ======================================================== Turn Feedback into TPT Credit (AKA FREE MONEY to BUY MORE at TPT!) Go to your "My Purchases" page. Beside each purchase you will see a "Provide Feedback" button. Click It! Remember, you earn TPT credits (which works the same as cash) t