2. April 17, 2013 AGENDA: 1 – Bell Ringer & Part. Log 2 – Review Lab 3 – CN: Thermodynamics Graphs 4 – Work Time Today’s Goal: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Homework 1. Thermodynamics Graphs 2. EC: Report Card Pick-Up is tomorrow 12-6pm 3. Study for QUIZ Friday 4. Work from WEEK 30 is due Friday

3. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. 5 minutes!

4. 4 MINUTES REMAINING…

5. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. 4 minutes!

6. 3 MINUTES REMAINING…

7. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. 3 minutes!

8. 2 MINUTES REMAINING…

9. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. 2 minutes!

10. 1 MINUTE REMAINING…

11. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. 1 minute!!!

12. 30 seconds Remaining…

13. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. 30 seconds!!!

14. 10 Seconds Remaining…

15. BELL- RINGER TIME IS UP!

16. April 17, 2013 AGENDA: 1 – Bell Ringer & Part. Log 2 – Review Lab 3 – CN: Thermodynamics Graphs 4 – Work Time Today’s Goal: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Homework 1. Thermodynamics Graphs 2. EC: Report Card Pick-Up is tomorrow 12-6pm 3. Study for QUIZ Friday 4. Work from WEEK 30 is due Friday

17. Wednesday, April 17 Objective: Students will be able to contrast heat curve graphs and reaction coordinate diagrams. Bell Ringer: Describe the following as exothermic or endothermic reactions: 1. 2. REVIEW

18. Review Lab

19.  Topic: Thermodynamics Graphs  Date: 4/17/2013  Thermodynamics = study of heat movement  Law of Conservation of Energy = Energy can change forms, but is neither created nor destroyed.  Today we will contrast two types of thermodynamics graphs:  Heat Curves: Temperature vs. Time  Reaction Coordinate Diagrams: Enthalpy vs. Time Cornell Notes

20. Heat Curve = shows how temperature of the surroundings are changing during a chemical reaction. (Measured in yesterday’s lab) Diagram Heat Curves. Temp. of surroundings will increase. Temp. of surroundings will decrease.

21. Cornell Notes  Enthalpy = “energy” (H) = a measure of the amount of heat “energy” in a reaction system at constant pressure  This is the amount of chemical potential energy stored in bonds of molecules.  The change in enthalpy in the system is opposite (or inverse) the change in temperature of the surroundings. Describe enthalpy.

22. Cornell Notes  Reaction Coordinate Diagram = shows changes in enthalpy (heat) of a reaction system. Describe Reaction Coordinate Diagrams. Reactants have more heat than products Products have more heat than reactants. R RP P ∆H = + ∆H = -

23.  Energy in the system is inverse to temperature of the surroundings.  Heat Curve and Reaction Coordinate Diagram graphs are inverse! Summarize what you have learned today. Heat Curves Reaction Coordinate Diagrams

24. Reflection Answer the following reflection question:  Contrast heat curves and reaction coordinate diagrams. Specifically describe the axes for each type of graph.