..... Finish Chapter 13 .....

Questions for Today
1.  What ideas come to mind when you hear Thermo-dynamics ?

2.  How much energy is needed to completely clear Goessmann Lab ?

Demonstrations
1.  Sugar + oxidizer + match = Trouble

Readings
6.1, 6.2, 6.3, 6.6

OWL Homework
6.1b Homework: Energy Conversions
6.2 Homework: First Law Calculations

Have a great 3-DAY weekend !
    ....but don't forget to do some chemistry.....

.........

President's Day - No class

Questions for Today
1.  What is the study of Thermodynamics all about ?
     Thermodynamics
     Internal Energy

2.  What do heat and work have to do with the First Law ?

3.  How is the energy of a reaction measured ?

4.  How are heat and temperature related ?
     Heat Capacity  - Csp

Demonstrations
1.  Ball and Internal E
2.  Solar cell
3.  Duck-on-a-bike, Internal E and Work
4.  Flask + cork
5.  Thermos
6.  1 ml vs 1000 ml of water

Readings
6.4, 6.5 ... Skip 6.7

OWL Homework
6.3a Simulation: Temperature Change from Heat Transfer
6.3b Tutor: Specific Heat Capacity
6.3c Homework: Specific Heat Calculations
6.5a Simulation: Heat Transfer

Questions for Today
1.  How are heat capacities determined ?
     Experiment

2.  How do we measure heat flow ?
     Calorimetry

3.  Why do they call it a BOMB calorimeter ?

4.  What information can you obtain from bomb calorimetry ?
     Energy content of foods
     Food Calorie vs calorie, joule

Demonstrations
1.  Flask + Lid
2.  Flask + Balloon
3.  Bomb Calorimeter
4.  Lecture Worksheet 6-1  

Readings
6.8, 6.11, 6.12 ... Skip 6.9, 6.10

OWL Homework
6.5c Homework: Calorimetry - Coffee Cup
6. End of Chapter Questions - Parameterized

6.6a Simulation: Calorimetry - Bomb
6.6c Homework: Calorimetry - Bomb

Questions for Today
1.  What is the difference between Internal Energy and Enthalpy ?
     Constant Volume v.s. Constant Pressure

2.  What happens during a phase change ?
      Phase Changes vs Heating/Cooling
      Enthalpies of Fusion and Vaporization
      Heating Curve

3.  Do we need to measure ΔH for every known reaction ?
     Hess's Law

Demonstrations
1.  Lecture Worksheet 6-2
2.  

Readings
6.13, 6.14, 6.15, 6.16, 6.17, 6.18, 6.19

OWL Homework
6.7a Tutor: Phase Changes
6.7b Tutor: Enthalpy of Vaporization
6.7c Homework: Phase Changes
6.7d Simulation: Heating Curve
6.8a Tutor: Enthalpy Changes
6.8c Homework: Thermochemical Stoichometry

Have a wonderful weekend !
    ....but don't forget to do some chemistry.....

... Q & A Session for Exam 1 - Cancelled Due to Snow !

Questions for Today
1.  Why does Hess's Law work for Enthalpies of reaction ?

2.  Can we standardize the reactions used for Hess's Law ?
     Standard Formation Reaction
     Standard Reaction Enthalpy from tabulated data
     Thermochemical data - Text .... NIST.... Sucrose


3.  How do we interpret ΔH_f⁰ in terms of an energy diagram ?

Demonstrations
1.  Lecture Worksheet 6-2
2.  Lecture Worksheet 6-3
  

Readings
6.20, 6.21

OWL Homework
6.9a Simulation: Hess's Law
6.9b Homework: Hess's Law
6.10a Tutor: Enthalpy Change from Enthalpy of Formation
6.10b Homework: Enthalpy of Reaction from Enthalpies of Formation

... Q & A Session for Exam 1 - 7:00 - 8:30 PM , GSMN 51

Questions for Today
1.  Does the enthalpy, H, relate to something physical ? 
     Bond Enthalpies - Interpretation

2.  Can we summarize all of the ideas for Chapter 6 ?
      Chapter 6 Summary

... Begin Chapter 7 ....

Demonstrations
1.  Lecture Worksheet 6-3
  

Readings
6.20, 6.21

OWL Homework
6.11a Simulation: Enthalpy Change from Bond Enthalpy
6.11b Homework: Enthalpy Change and Bond Enthalpy
6. End of Chapter Questions - Parameterized ... Extra Credit