Chemistry 104A/C Dr. Christine Yerkes 207 Chem Annex Mon. and Wed. 1:00 - 2:00 Tues. and Thurs.11: :00 or by appointment

Chemistry, 8th ed., Zumdahl Quiz sections begin: Wed., Jan. 20 Required Texts: Recommended text: Organic Chemistry: a Short Course 13 th ed., Hart, Crane, Hart I-Clicker

On-line Homework: 80 pts. Quiz score:150 pts. I-Clicker 20 pts. Hour Exams (3 x 150)450 pts. Final Exam300 pts pts. No make-up quizzes or exams Grading Policy:

Grades % ( ) = A % ( ) = A % ( ) = A % ( ) = B % ( ) = B % ( ) = B- etc., etc., etc points total

weekly quizzes - material from Lecture and Quiz section each quiz worth 15 points -keep 10 highest Quiz scores: 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 80 points

Course Homepage Lon-Capa = net i.d. Password = AD password Chem 104A/C Course Web Sites homepage

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

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

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

Kinetic Potential Energy

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

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

Potential Energy  P.E. Q1Q2Q1Q2 r Q = charge r =distance P.E. total =P.E. n-n + P.E. n-e + P.E. e-e + P.E. IMF

Potential Energy CH 4 + 2O 2  CO 2 + 2H 2 O C HH H H + O=O O=C=O + O HH O HH P.E. total =P.E. n-n + P.E. n-e + P.E. e-e + P.E. IMF Chemical changes

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

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

Potential Energy Physical changes Intermolecular forces: ion-ion ion-dipole H-bond LDF dipole-dipole Q1Q2Q1Q2 r O=C=O   Na + Cl - Na +   Cl -      