1. Objective: Identify and describe factors that influence reaction rates. Warm-up: 1. What are the basic definitions of a physical & chemical change? (Try this WITHOUT your notes) 2. What are the 5 indicators? (Try this WITHOUT your notes) HOMEWORK ON DESK with NAME on it.

2. What is a physical change: What is a chemical change: A change in appearance only that does NOT make a new substance. A change that causes a new substance to be formed, must have at least one indicator. Tell the BASIC idea/definition for the following.

3. Watch 2 cool video clips of Extreme Diet Coke & Mentos reactions. Extreme Diet Coke & Mentos Experiments.mov Extreme Diet Coke & Mentos II video.mov Let’s make our own reaction with Diet Coke & Mentos!

4. Diet Coke & Mentos – Mythbusters! Mythbusters: Diet Coke and Mentos MiniMyth : Video : Discovery Channel

5. How Much Can You Remember About Physical and Chemical Changes? 1. Identify each of the following as either a chemical or a physical change. You must give a reason for your answer. a. Melting candle wax. _______________________________________________ b. Burning a candle. _________________________________________________ c. Tearing paper. ____________________________________________________ d. Burning paper. ___________________________________________________ e. Dissolving table salt. _______________________________________________ f. Mixing salt water and silver nitrate. _____________________________________ g. Cutting pieces of magnesium ribbon. ____________________________________ 2. Describe two observations you might make when a physical change occurs. 3. Describe two observations you might make when a chemical change takes place.