1. Creating a Positive Learning Environment for Everyone
Be respectful of your classmates
Save conversation for clicker portions of lecture
Put cell phones in “airplane” mode
Turn off tablets
Close laptops

2. Announcements
Exam #3: Thursday, Dec. 7th, 7:00-8:30pm (Conflict: 5:00-6:30pm, sign up in 1026 Chemistry Annex by NOON Thursday)
No calculators allowed
Exam room locations posted online
Q & A TA Review Sessions posted online
Lon-capa HW Remaining
Homework 8 – Type 1 due tomorrow, 12/6 by 7pm
Review Questions for Exam III due tomorrow, 12/6 by 10pm
Prelecture Assignment 24 – last one (due 12/12)
Online ICES Evaluations – please complete!

3. Overall goal: Atomic Structure Chemical Bonding 3D Molecular Structure
Molecular Properties

4. Clicker #1
Which of the following has the strongest London dispersion forces?
A) Cl2
B) Br2
C) I2
D) All of the above have the same amount of London dispersion forces.

5. Clicker #2
How many of the following interactions does CH3CH2OH exhibit?
London dispersion
dipole-dipole
hydrogen bonding
A) 0
B) 1
C) 2
D) 3

6. Clicker #3
How many of the following interactions does CH3OCH3 exhibit?
London dispersion
dipole-dipole
hydrogen bonding
A) 0
B) 1
C) 2
D) 3

7. Clicker #4
Choose the molecule with the highest boiling point. (Hint: Is each polar or nonpolar?)
a) SeO3
b) SeO2
c) H2

8. Clicker #5 Is methane (CH4) expected to dissolve in H2O?
A) Yes – Both are polar.
B) Yes – CH4 is nonpolar and H2O is polar.
C) Yes – Both are nonpolar.
D) No – Both are nonpolar.
E) No - CH4 is nonpolar and H2O is polar.