1. Update your Table of Contents Write your homework – leave it to be stamped Get your Review Packet out to be checked! Quiz each other on the vocab list while you wait to be checked! WARM - UP DateSession # ActivityPage # 10/18 & 10/21 20 Chemistry Review Packet 33 10/22 & 10/23 21 Reaction Rate Wrap-Up/Last Chance to Balance 34

2. What makes these reactions occur again? – Collisions between molecules – (molecules are bumping into each other and their valence electrons are bonding leading to a chemical reaction) And how does this affect the Rate of Reaction? – More collisions = more reactions at a faster rate – Less collisions = less reactions at a slower rate “Collision Theory”

3. Increasing the surface area (by breaking something into multiple pieces) increases the reaction rate…HERE’S WHY: Wrap-Up: Greater surface area = greater chance for collisions More collisions = more/faster reactions taking place Surface Area

4. Increasing the temperature, increases the reaction rate…HERE’S WHY: Wrap-Up: Higher temperature makes particles speed up = more collisions More collisions = more/faster reaction taking place Temperature

5. Increasing thepressure, increases the reaction rate…HERE’S WHY: Wrap-Up: Particles have less space to move in = more collisions More collisions = more/faster reactions taking place Pressure

6. Increasing the concentration (amount of a substance) increases the reaction rate…HERE’S WHY: Wrap Up: Putting MORE of a substance into the same amount of space = more collisions More collisions = more/faster reactions taking place Concentration

7. Adding a catalyst increase the rate of reaction…HERE’S WHY: Wrap-Up: Catalysts act as a “matchmaker” to jump start a reaction or make it faster Catalysts are not affected or used during the reaction Catalysts

8. Does your class data table confirm these results?

9. 1 st Block Data Table (A-day) Independent VariableWhat is Affecting the Reaction Rate? TemperatureTime for Reaction to Complete Powdered Alka Seltzer Tablet concentrationN/A55.5 seconds Broken Alka Seltzer Tablet SURFACE AREA N/A34 seconds  Whole Alka Seltzer Tablet Surface AreaN/A Room Temp WaterTemperatureRoom Temp. Cold WaterTEMPERATURECold47 Hot WaterHot26.26 Alka Seltzer in Film Canister Surface area concentration N/A12.34 SECONDS Denture Cleaner in Film Canister Concentration, pressure N/A6 min

10. 3 rd Block Data Table (A-day) Independent VariableWhat is Affecting the Reaction Rate? TemperatureTime for Reaction to Complete Powdered Alka Seltzer Tablet surface areaN/A19 seconds Broken Alka Seltzer Tablet Surface areaN/A37 Seconds Whole Alka Seltzer Tablet concentrationN/A42 seconds Room Temp WaterTemperature Room Temp.37.39 Cold WaterTemperatureCold50 Seconds Hot WaterTemperatureHot1 minute 31 seconds Alka Seltzer in Film Canister PressureN/A7.97 seconds Denture Cleaner in Film Canister N/A

11. 4 th Block Data Table (A-day) Independent VariableWhat is Affecting the Reaction Rate? TemperatureTime for Reaction to Complete Powdered Alka Seltzer Tablet Surface areaN/A25.97 seconds Broken Alka Seltzer Tablet Surface AreaN/A37 seconds Whole Alka Seltzer Tablet pressureN/A 34 Seconds Room Temp WaterSurface Area Temperature Room Temp.35 seconds Cold WatertemperatureCold1 minute and 15 seconds Hot WaterSurface temperatureHot13 seconds Alka Seltzer in Film Canister pressureN/A17 seconds Denture Cleaner in Film Canister N/A

12. 1 st Block Data Table (B-day) Independent VariableWhat is Affecting the Reaction Rate? TemperatureTime for Reaction to Complete Powdered Alka Seltzer Tablet Surface areaN/A32 seconds Broken Alka Seltzer Tablet InhibitorN/A56 seconds Whole Alka Seltzer Tablet Surface areaN/A50 seconds Room Temp WaterPressureRoom Temp.40 seconds Cold WaterTemperatureCold36 seconds Hot WaterTemperatureHot21 seconds Alka Seltzer in Film Canister PressureN/A11.2 seconds Denture Cleaner in Film Canister N/A

13. 3 rd Block Data Table (B-day) Independent VariableWhat is Affecting the Reaction Rate? TemperatureTime for Reaction to Complete Powdered Alka Seltzer Tablet Surface AreaN/A33.9 Broken Alka Seltzer Tablet Surface areaN/A35.39 Whole Alka Seltzer Tablet Surface areaN/A38 seconds Cold WaterTempratureCold49.9 seconds Room Temp. WaterTemperatureRoom Temp41.7 seconds Hot WaterTemperatureHot22 seconds Alka Seltzer in Film Canister PressureN/A 16 seconds Denture Cleaner in Film Canister N/A

14. 4 th Block Data Table (B-day) Independent VariableWhat is Affecting the Reaction Rate? TemperatureTime for Reaction to Complete Powdered Alka Seltzer Tablet Surface areaN/A26 seconds Broken Alka Seltzer Tablet Surface AreaN/A45 sec Whole Alka Seltzer Tablet Surface AreaN/A45 seconds Cold WaterTemperatureCold1 min. 13.41 sec. Room Temp. WaterTemperatureRoom Temp.36.2 seconds Hot WaterTemperatureHot23.46 seconds Alka Seltzer in Film Canister PressureN/A5 seconds Denture Cleaner in Film Canister N/A

15. Ted Talks – Reaction Rates http://ed.ted.com/lessons/how-to-speed-up- chemical-reactions-and-get-a-date Answer the final question under Ted Talks – Reaction Rates

16. Last Chance to Balance Balance the 5 equations on the sheet – if you get them correct you will be using the Chromebooks for the remainder of class to complete the “Study Buddy Review” If you get them incorrect you will be on the carpet in the front with me practicing how to balance equations.

17. REVIEW You can work with a PARTNER, as some games require 2 players Play the review games listed on the sheet given to you and your partner…if you get through all of them ONLY then can you search for alternate CHEMISTRY RELATED sites

18. EXPECTATIONS I expect you and your partner to play only what you are supposed to without being disruptive in any way!! When you are working with me you are expected to complete the equations

19. P + O P ₄ O ₁₀ Equation 1 - Balance Box Answer

20. Cl ₂ + NaBr NaCl + Br ₂ Equation 2 - Balance Box Answer

21. Cs + N ₂ Cs ₃ N Equation 3 - Balance Box Answer

22. CuCl ₂ + H ₂ S CuS + HCl Equation 4 - Balance Box Answer

23. Al + HCl AlCl ₃ + H ₂ Equation 5 - Balance Box Answer

24. Balancing Equations Practice Homework Find the Balancing Equations Practice Homework or take another sheet – we will work on a few together, and then you can practice on your own.

25. Lets Practice: Part D - #1 Na + MgF 2 NaF + Mg

26. Lets Practice: Part D - #2 Cl 2 + KIKCl + I 2 IMPORTANT: Cl = Chlorine K & I are 2 separate elements

27. Lets Practice: Part D - #3 HCl + NaOH NaCl + H 2 O

28. Lets Practice: Part D - #4 Na + NaNO 3 Na 2 O + N 2

29. Lets Practice: Part D - #5 PbBr 2 + HCl HBr + PbCl 2

30. REVIEW Try 6, 7 & 8 on your own, and then check the answer key

31. Lets Practice: Part D - #6 Na 3 P + CaF 2 NaF + Ca 3 P 2

32. Lets Practice: Part D - #7 AlBr 3 + K KBr + Al

33. Lets Practice: Part D - #8 CaF 2 + Li 2 SO 4 CaSO 4 + LiF