Exam #2 concept sheet

Disclaimer—THIS IS NOT EXHAUSTIVE BUT IS JUST A GUIDE

Watch for updates—this is in progress!

_{DON’T FORGET YOUR PENCIL AND CALCULATOR}

This is not meant as an exhaustive guide, but it is a good start.  Please use lectures, sections, online notes, textbook, and “google” resources for extra practice.

1.     Be able to give the hybridization of atoms in molecules, as indicated by valence bond theory.

2.      Be able to relate hybridization to σ and π bonds.

3.      Know bond angles, valence electron counts, and so on, particularly in relation to hybridization.

4.   Be able to fill in molecular orbital (MO) diagrams for diatomic molecules or ions. 

5.     Be able to assess the relative bond orders/strengths of different diatomic molecules and ions using MO diagrams, as well as relative stability, diamagnetic/paramagnetic properties, etc.

6.     Be able to give molecular electron configurations for diatomic atoms or ions.

7.     Know the relative shapes/electron distributions for σ and p bonds, as well as what type of atomic orbital overlap is required to form each type.  Know how many and what types of bonds are required to form single and multiple bonds.

8.    Know what bonding and antibonding orbitals are and what it means when electrons occupy them.

9.    Know the fundamental principles and assumptions of valence bond (VB) theory and molecular orbital (MO) theory.

10.  Be able to read phase diagrams and pick out important points/lines.   

11.   Be able to give the dominant (and other) intermolecular forces present in pure samples of different substances.

12.   Be able to assess the relative polarizability of atoms or ions.

13.   Be able to determine phases and relative melting/boiling points for different substances.

14.  Be able to determine molarities of solutions.

15.  Be able to assess/discuss the solubility/miscibility of different substances.

15.  Be able to assess the colligative properties of different solutions.

16.  Be able to calculate data related to the different colligative properties of solutions.

17.  Be able to assess the validity of statements regarding different spectroscopic techniques and regarding representative spectra.  Know which technique is probably best suited for a given application.

18.   Know why certain compounds might appear colored.

19.  Know which region of the electromagnetic spectrum is most likely associated with different transitions in atoms or molecules or ions.

 AGAIN, this is not exhaustive but gives you a good list of topics to study.

Good luck and try not to stress out!