Chemistry 104B Dr. Christine Yerkes 207 Chem Annex 333-6353 cyerkes@illinois.edu Mon. and Wed. 1:00 - 2:00 Tues. and Thurs.11:00 - 12:00 or by appointment

Required Texts: Chemistry, 8th ed., Zumdahl Recommended text: Organic Chemistry: a Short Course 13th ed., Hart, Crane, Hart I-Clicker Quiz sections begin: Monday, Jan. 24

Grading Policy: On-line Homework: 70 pts. Quiz score: 150 pts. I > clicker 30 pts. Hour Exams (3 x 150) 450 pts. Final Exam 300 pts. 1000 pts. No make-up quizzes or exams

Grades 1000 points total 97-100% (970 - 1000) = A+ 87 - 89% (870 - 899) = B+ 83 - 86% (830 - 869) = B 80 - 82% (800 - 829) = B- etc., etc., etc.

150 points Quiz scores: weekly quizzes - material from Lecture and Quiz section Quizzes on LON-CAPA open Wednesday at 5:00 open for 1 week Three tries – 1st worth 15 2nd worth 13.5 3rd worth 12 keep 10 highest 150 points

On-line Homework: 10 Homework assignments on LON-CAPA due dates in the on-line Syllabus and calendar credit for all problems completed by deadline normalized to 70 points

I > clicker 1 point for answering questions during lecture 0.25 points for each correct answer Keep 30 highest scores

Course Homepage Course Web Sites Chem 104B Lon-Capa = net i.d. http:// www. chem.uiuc.edu Course Web Sites Chem 104B Lon-Capa = net i.d. Password = AD password homepage

- + Thermodynamics Thermo = heat or energy dynamics = movement System Surroundings

Open systems - Closed systems + Isolated systems mass and energy Surroundings no exchange

P.E.grav = mass x g x height Energy Internal Energy = E E = Kinetic Energy + Potential Energy energy due to motion energy due to position K.E. = 1/2 mv2 P.E.grav = mass x g x height

Kinetic Potential Energy

Kinetic Energy K.E. = 1/2 mv2 K.E. K.E. K.E. K.E. = + + total K.E. translation K.E. rotation K.E. vibration = + + K.E.translation  Temperature (K) degrees of freedom = 3n n = # atoms

Kinetic Energy K.E. = 1/2 mv2 K.E. K.E. K.E. K.E. K.E. = + + total translation K.E. rotation K.E. rotation K.E. vibration = + +

Potential Energy - - - - - P.E.  Q1Q2 r Q = charge r = distance + - r - - Q = charge + + r = distance P.E.total = P.E. n-n + P.E. e-e + P.E. n-e + P.E. IMF - - + +

Potential Energy - - Chemical changes P.E.total = P.E. n-n + P.E. e-e IMF - - + + CH4 + 2O2  CO2 + 2H2O C H O H O=O O=C=O + +

Potential Energy chemical changes P.E.reactants P.E.products products reactants ( T ) K.E. P.E. reactants products

Potential Energy - P.E.total = P.E. n-n + P.E. n-e e-e IMF + physical changes chemical changes

Potential Energy Physical changes Q1Q2 r Intermolecular forces: ion-ion Na+ Cl- d+ H-bond d- ion-dipole Na+ d- d+ Cl- LDF d+ dipole-dipole d- O=C=O d- d+ d- d+ d-