Schedule1 Schedule2 Schedule3 Schedule4
Schedule to Exam 2
| Date | Day | Topics |
|---|---|---|
| 9/17 | Thu | Talk about Exam 1. Begin Chapter 13 on Chemical Bonding. The importance of valence electrons. |
| 9/18 | Fri |
| 9/21 | Mon | |
| 9/22 | Tue | Ionic vs Covalent Bonding. Writing e-dot structures. Polar vs Non-polar bonds. I discussed how a PARTIAL charge develops in a molecule. Any partial (-) charge must be accompanied by a partial (+) charge. Dipole moments are measured and the units are debye units. Electronegativity (EN) is a scale from 0 to 4.0 and relates to electron affinity. Know the periodic trend for EN. |
| 9/23 | Wed | |
| 9/24 | Thu | More on bonding. Writing e- dot formulas. The octet rule. Showed the first 10 alkanes (hydrocarbons). More on writing electron dot structures. How most all the 2nd row elements obey the octet rule. Organic chemistry structures and the "looks" of certain elements (C, N, O, F, Br, Cl, I, and H) in an electron dot/line structure. Showed the e- dot structure for carbonate. Drew 3 equivalent structures and put doubleheaded arrows between them. Defined and explained RESONANCE structures. Defined Bond Order. Carbonate's C-O bonds have bond orders of 1.33. Drew a "hybrid" structure for carbonate. |
| 9/25 | Fri | Homework 4 due by 11:30 PM |
| 9/28 | Mon | |
| 9/29 | Tue | Introduce and define formal charge. "Best" structure will minimize formal charge. DISobeying the octet rule. More on the concept of delocalization of electrons. Introduce VSEPR (section 13.13) and VB Theory (Chapter 14) |
| 9/30 | Wed | Homework 5 due by 11:30 PM |
| 10/1 | Thu | Molecular and Electronic Geometries continued |
| 10/2 | Fri |
| 10/5 | Mon | |
| 10/6 | Tue | Revisit Polarity. Molecular orbital
theory. Talk about Exam 2
Homework 6 due by 11:30 PM |
| 10/7 | Wed | EXAM 2 : 7-9 PM |