Chemistry 14C: Organic Molecular Structures and Interactions

Winter 2012

Click to find information about....

Announcements
March 14: More finals week office hours
March 13: Final week office hours
Known Textbook Errors
Grading Scale
March 28: Final exam stats posted. Final course grades uploaded to Registrar.
Learning Manager
Current and Past Exams and Keys
March 22: Final exam and key posted
OWLS Problem Sets Solutions
March 16: All OWLS solutions now posted
Teaching Assistants
This is where you can find the Weekly Activities Schedule
Extra Credit
Everyone uses the Thinkbook
   
Required Texts & Ancillary Materials Lecture Schedule
Exam Dates, Times, and Locations
March 9: Final exam location posted
Discussion Board


Announcements

March 13 and March 14

Finals week office hours

March 1

Tejas' office hour on Friday March 2

On Friday March 2, Chem 14C TA Tejas' office hour will be 3-4 PM in Young Hall 3077F (instead of the usual time of 2-3 PM).



February 23

Extra Office Hour

In order to help you prepare for the second midterm exam, Chem 14C TA Ray will have an extra office hour on Sunday February 26, 7-9 PM, in Young Hall 3069.


February 1

Extra Office Hour

In order to help you prepare for the first midterm exam, Chem 14C TA Shane will have an extra office hour on Friday February 3, 5-6 PM, in Young Hall 3077F.


January 9

Weekly Course Activities Schedule

The complete Chem 14C Weekly Course Activities Schedule is available here (pdf).

Start of Course Announcements

Model Kits in Discussion Section

It is important that you learn how to use your molecular model kit. Some problems covered in discussion may involve models, so please bring your molecular model kit to discussion section for the next few weeks.

Extra Material on Molecular Geometry and Hybrid Orbitals

Some of you are having difficulty with the idea of hybrid orbitals. For another course I prepared a lecture on molecular geometry and orbitals, which might help you understand the topic a bit better. Download the PowerPoint version or the pdf version.

An Essay on Learning

I encourage you to read Learning: Your First Job, an essay with useful pointers on studying.

Enrollment Requests

If you are currently on the Chemistry 14C waitlist, your chances of enrollment are high, and you need take no further action at this time. Enrollments (if any) will be processed automatically sometime during the first week of the quarter.

Starting Monday January 9: If you are not currently enrolled nor on the waitlist, but wish to become enrolled, please send an email with your name, student ID number, email address, and a request to be added to the enrollment request list. Enrollment requests will processed on Friday January 13, and results announced by email. Enrollment request emails submitted before Monday January 9 will not be included in this list.

Molecular Conformations Review Work

Several Chem 14C students have lamented that they did not get as much depth on molecular conformations in Chem 14B as they would have liked. If you are struggling with this topic, try these sections and problems from the Vollhardt and Schore textbook, and Organic Chemistry as a Second Language (Klein):

Vollhardt and Schore 5th edition Chapter 2: Read sections 2-7 and 2-8, and do problems 18, 19, 36, 37, and 49.

Vollhardt and Schore 5th edition Chapter 4: Read sections 4-1 to 4-5, and do problems 1, 3, 5, 9, 22, 23, 25, 28-30, and 47-49.

Klein Chapter 6: Read the entire chapter and do all the problems it contains.

Chem 14C Discussion Board

The Chemistry 14C discussion board is now available. It is a great place to post or answer questions about course material, and engage in general chat. Please email Dr. Hardinger if you have any problems or suggestions. (Please note that you must register at the message board web site before you can post messages. Once you receive the confirmation email you will be able to login to the discussion board and post messages.)

Discussion board participation is not mandatory, but its frequent and thoughtful use might earn you as much as ten points extra credit. Check the discussion board rules for more information.

The Chem 14C discussion board password in chem14c.

Use of Model Kits

Three-dimensional structure is a very important component of introductory organic chemistry, and you need to master its intricacies!

As you may have discovered by now, sometimes it can be rather challenging to visualize the three-dimensional structure of a molecule. This is especially true when considering conformations and stereochemistry. Some -- but not all -- of you have also discovered the value of using your molecular model kit to visualize and explore organic structures in three dimensions.

You are allowed -- and strongly encouraged -- to use your model kit during an exam. (Experience suggests that students who do not use their models are at a disadvantage.) Therefore it is very strongly recommended that you practice the use your model kits with Thinkbook, OWLS and textbook problems, and that you bring them to discussion sections, bring them to office hours, sleep with them, and in general make them your best studies buddies. To know and use your model kit is to love your model kit!

Week One Discussion Sections and Office Hours

Discussion sections and office hours do not meet until after lecture on Wednesday January 11.

Why Should I Bother With Discussion Section?

Check out these statistics that show a strong correlation of exam score with number of discussion sections attended.

Organic Chemistry Web Site Link List

Use this list of web sites to aid your understanding of organic chemistry. Although it is organized according to a different textbook, it should still be a valuable resource.

Some thoughts to consider:

I am a teacher ... The life I lead is the most agreeable I can imagine. [In the] classroom ... here await me a group of intelligent and curious young ... [people] who read the books assigned them with a sense of adventure and discovery, discuss them with zest, and listen appreciatively to explications I may offer. What makes the process most satisfying is the conviction that ... education is mankind's most important enterprise.    --- an American college teacher, 1962

We lead students to the fountain of knowledge. Some will drink deeply, some will take a few swallows, and some will just sip. An increasing number will, as at the dentist, merely rinse before spitting out.    --- an American college teacher, 1995

Are you a 1962 student or a 1995 student?  Read more about studying and student performance from this essay.

Known Typographical Errors List...and a reward for finding new errors!

A list of known textbook and web site errors and information of an extra credit point bounty for finding such errors is available.

Online Tutorials

Some organic chemistry tutorials written by Dr. Hardinger and past students are available.



Current and Past Exams and Keys

For the current quarter, links activated when exam key is posted

Course numbers, topics and sequence have changed over time. Old exams may not be indicative of current course content or conceptual expectations.

Help! I  am having trouble opening pdf files!

Spectroscopy data table for exam 2 and final exam
 

Spring 2010
Lecture 1
Exam 1 and Key
Exam 2 and Key
Theme molecules
Final Part A and Key Final Part B and Key
Spring 2010
Lecture 2
Exam 1 and Key Exam 2 and Key
Theme molecules
Fall 2010
Exam 1 and Key
Exam 2 and Key
Final Part A and Key
Final Part B and Key
Winter 2011
Exam 1 and Key
Exam 2 and Key
Final Part A and Key
Final Part B and Key
Spring 2011
Lecture 1
Exam 1 and Key
Exam 2 and Key
Final Part A and Key
Final Part B and Key
Spring 2011
Lecture 2
Exam 1 and Key
Exam 2 and Key
Final Part A and Key
Final Part B and Key
Fall 2011
Exam 1 and Key
Exam 2 and Key
Final Part A and Key
Final Part B and Key
Winter 2012
Exam 1 and Key
Exam 2 and Key Final Part A and Key
Final Part B and Key

To see your current standing, consult the Grading Scale

Want to do better next time?


Learning Manager


Chemistry 14C Teaching Assistants...Your Guides to Knowledge!

The Weekly Course Activities Schedule (a printable schedule including all discussion sections and office hours) is available here (pdf). <--- Posted January 11


Help! I  am having trouble opening pdf files!

Discussion sections and office hours do not meet until after lecture on Wednesday January 13

Teaching Assistant
Office Hours (WGYoung 3077F)
Campus map
Discussion Sections
Campus map
Ray Gipson
rgipson@chem.ucla.edu

Tuesday 2:00-2:50 PM*
Thursday 9:00-9:50 AM
D: Tuesday 9 AM, Boelter 5419
E: Wednesday 9 AM, Boelter 5280
H: Friday 9 AM, WGYoung 3069
Tejas Shah
TejasShah@ucla.edu

Tuesday 2:00-2:50 PM*
Friday 2:00-2:50 PM
C: Tuesday 8 AM, WGYoung 3069
G: Thursday 8 AM, WGYoung 3069
I: Friday 1 PM, WGYoung 3069
Shane Stone
shanewstone@ucla.edu

Monday 2:00-2:50 PM
Tuesday 2:00-2:50 PM*
A: Monday 11 AM, Geology 4645
B: Monday 1 PM, WGYoung 1044
F: Wednesday noon, Pub Aff 1222

*TA for the Tuesday 2:00-2:50 PM office hour varies.

Discussion Section Activities: OWLS Sessions

Weekly discussion sessions will feature OWLS (Organic Workshop for Learning Success) problem sets, written by the instructor. These are intended to develop your mastery of organic chemistry concepts by emphasizing problem solving skills. These problems sets will be used as determined by the Instructional Associates, based upon their perceptions of your learning needs.

Problem sets will be covered in discussion after the topic is introduced in lecture. Each lecture topic has its own associated problem set. The problem sets are in your Thinkbook, whereas the answers are available on-line only. So that you have an incentive to actually work through the problems on your own, solutions will be posted about one week after the lecture discussion on the topic is complete.

"Why should I bother with discussion section?"  A fair question!  You may be tempted to skip discussion, especially at 8 AM, but note that the OWLS problems sets are written by the same person who also writes the CFQ & PP and exams, suggesting OWLS problems should be excellent exam practice. In addition, course grade statistics suggest that persistent use of OWLS problems leads to grade success. Discussion section attendance is not mandatory, but is very strongly suggested.

Check out these statistics from a previous quarter that show a strong correlation of exam score with number of discussion sections attended.

OWLS Problem Sets Solutions
Solutions will be posted here about one week after the topic is covered in lecture.
Topics not included here do not have OWLS problem sets.

Help! I  am having trouble opening pdf files!

Problem Set
Solutions Available
Molecular Structure - Introduction and Review Solutions
Resonance Solutions
Conjugated Molecules Solutions
Introduction to Aromaticity Solutions
Stereochemistry
Solutions
Carbohydrates
Solutions
Mass Spectrometry
Solutions
Infrared Spectroscopy Solutions
Proton NMR Spectroscopy Solutions
Solving Spectroscopy Problems Solutions
13C-NMR Spectroscopy
Solutions
X-ray Crystallography Solutions
Noncovalent Molecular Forces
Solutions
Structure and Reactivity - Acids and Bases Solutions
Lipids
Solutions
Amino Acids, Peptides and Proteins Solutions
Nucleotides and Nucleic Acids
Solutions


Required Texts and Materials


Ancillary Materials VERY STRONGLY RECOMMENDED


Grading Scale

Read the Grading Instruments and Policies statement. It explains the format of the final exam, plus other issues concerning grades and exams.

Use this scale to determine your current course grade. The numbers are based on exam scores and grade statistics for over 70 past Hardinger courses. Even though these past courses used a sliding grade scale, the exam averages and course grades were fairly consistent, so this scale is on par with past course grades. Important clarification: After the final exam has been graded, averages for all exams will be calculated and compared to the grading scale shown below. An adjustment to the grading scale may then be made, if warranted by the exam averages. This adjustment, if necessary, will lower the cutoffs (make grades easier to get) and not raise the cutoffs. Therefore this grading scale really is an estimate of the final scale curved in the traditional sense, and not a fixed, immutable scale. If the grade scale changes, then the modified scale will be posted here. The grading scale has only changed a few times in the past decade, so it is reasonable to assume it will remain fixed this quarter as well.

Student Progress Assessment Tools and Their Point Values
Exam 1 (100 points) + Exam 2 (100 points) + Final Exam (200 points) = 400 possible points
Extra credit is added after the grade scale is set, and does not influence the grade scale.

Exam Statistics for the Current Quarter

Posted after each exam's grading has been completed.
Standard deviation is not calculated because it does not control the grade distribution for this course.
Includes all score adjustments due to regrades.


Exam 1
Exam 2
Final Part A
Final Part B
Discussion Board*
High score 96
96
94
100
10
Average 66.5
67.3
66.5
74.7
4.6
Low score 27
21
19
30
01

Project Final Course Grade Scale
Any consideration for adjusting the final grade scale cannot be made until after the final exam is graded.
The grade scale and final course grades are not open for discussion, debate, bargaining, or negotiation.

A+
400 - 380 points
100 - 95.0%

B+
339 - 320 points
84.9 - 80.0%

C+
279 - 252 points
69.9 - 63.0%

D+
199 - 172 points
49.9 - 43.0%
A
379 - 360 points
94.9 - 90.0%

319 - 300 points
79.9 - 75.0%

C
251 - 224 points
62.9 - 56.0%

D
171 - 144 points
42.9 - 36.0%
A-
359 - 340 points
89.9 - 85.0%

B-
299 - 280 points
74.9 - 70.0%

C-
223 - 200 points
55.9 - 50.0%

D-
143 - 120 points
35.9 - 30.0%

Exams 1 and 2 will be returned in the discussion section or office hours of the TA's name that you select on the exam cover page. The final exam will be available in my office (Young Hall 3077C) when the final exam averages are posted, usually no earlier than one week after the exams are taken. For questions concerning regrades, please read the Regrade Policy Statement.

<--- This student did not pass Chemistry 14C
This student earned an A in Chemistry 14C --->
Are you an Einstein or an amoebae? When an exam is returned to you, consider the following thought (attributed to Karl Popper, an educational philosopher): "The difference between the amoebae and Einstein is that, although both make use of the methods of trial and error or elimination, the amoebae dislikes erring while Einstein is intrigued by it. He consciously searched for his errors in the hope of learning their discovery and elimination."


Extra Credit

Concerned about your grade? Looking for some extra credit? Check out discussion board participation and error bounty extra credit points. Additional extra credit projects may be announced during the quarter.


Discussion Board Rules

Discussion board can be accessed here.
Frequently Asked Questions

What makes for a good post?

Accuracy, detail, and precision. General interest. Insightful questions. Feel free to ask for explanation of a fundamental idea that is well-covered in lecture or the textbook, but such questions are not worthy of discussion board participation points. Limit each post to a single question or single answer. If you have more than one question, please submit multiple posts.

How many points have I earned this week, or so far this quarter?

Think of the discussion board as a project that lasts all quarter, but isn't graded until it is complete (like a ten-week long quiz). Just like a quiz, you can't stop in the middle and ask your score. Your discussion board participation point total will be written on the front of your final exam (after the exam is graded), so you can see your score when you collect your final exam. Like exam scores and course grades, discussion board participation scores cannot be revealed by email, IM, or phone.


Lecture and Exam Schedule

Download the Chemistry 14C Lecture and Exam Schedule (pdf).

Exam Dates, Times, and Locations
Campus map
Exam 1

Monday February 6
5:00 - 6:50 PM

Topics: Introduction and Review
through
Carbohydrates

Last name A - M in CS50
Last name N- Z in CS24







Exam 2

Monday February 27
5:00 - 6:50 PM

Topics: Mass Spectrometry
through
Solving Spectroscopy Problems

Last name A - Pi in Haines 39
Last name Pl - Z in Kinsey 1220B







Final exam
  
Thursday March 22
8:00 AM - 11:00 AM

Part A topics: 13C-NMR through DNA
Part B topics: Entire course

Everyone in CS50