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Nov 17, 2017
Solving R/S problems can be tricky at first, it is especially difficult to show how to do this in lecture on a screen since the problem is intrinsically 3 dimensional. Therefore, I have 2 small videos that show how to solve the problem we did in lecture today, both using a molecular model and also using your hand.
For the model video, click HERE
For the hand video, click HERE
In addition, some of the homework problems have video explanations showing how to use a model to solve these problems accurately, specifically:
Identification > Credit Questions > Question #1
Identification > Credit Questions > Question #15

Don't wait until it is too late like Tyler almost did a couple of years ago



Nov 17, 2017
There are several concepts we covered recently that are difficult to illustrate in lecture, since they are fundamentally 3 dimensional problems that are difficult to illustrate on paper or on a screen. For a better look at some of these, I have some small videos.
For a video that explains supermposibility, click HERE
For a video that shows how the 2 enantiomers of lactic acid are stereoisomers, as discussed in lecture, click HERE
For a video that shows how the R and S configurations for the 2 enantiomers of lactic acid are sdetermined, as discussed in lecture, click HERE
For a video that shows how racemic mixtures are formed in a chemical reaction, click HERE

Nov 17, 2017
For a video that explains backside attack for the example of the bromonium ion in the reaction of an alkene with Br2, click HERE

Nov 15, 2017
HOW TO PREPARE FOR THE FINAL EXAM:
It used to be that my final exam was approx. 1 week after my last lecture, and then the final exam schedule changed a couple of years ago and now the final is the Monday after the last lecture. Curiously, the class didn't really do any worse on the final exam after the switch, which I think just reflects that students just switched around their study schedule. Nevertheless, the final does come up very quickly, and I think that you need to be preparing for it now, especially since we still have material to cover.

And so PLEASE try to find some time to get started on the homework for the final over the break. Yes, I know that it is Thanksgiving and I expect you all to take at least some time off, but if you can get started NOW you will enjoy a much less stressful weekend before the final.

Material for the FINAL EXAM: The final will be roughly 50% material since the 3rd midterm and roughly 50% "greatest hits" from earlier in the semester, look at the old final exams and practice exams for guidance.

To study for the final I suggest that you focus primarily on the material since the 3rd midterm, radical reactions, chirality and substitution and elimination reactions, since roughly 50% of the points will be on that material. Don't try to go back and study everything from before the 3rd midterm. Instead, Then I suggest going over the old final and practice exams and use those to guide you as to what material from earlier in the semester you need to work further on. You will find that just by using it you will have now learned a lot of what seemed difficult earlier in the semester!

If you have questions I suggest that you try asking them on the class Facebook group page, I like to answer questions there because then many people will see the answer instead of just one.  More...

Nov 15, 2017
To see the answer key to Quiz #12, Click HERE.
To see the new Quiz #13, Click HERE.
The deadline for submitting Quiz #13 is Sunday, Nov 19th, 6PM.

Nov 15, 2017
It turns out that the last page of the notes for the Radicals Section of the notes is missing in your version of the notes. To download this missing page as gapped notes, Click HERE.
Nov 12, 2015
POINTS CLARIFICATION
There are 14 quizzes this semester. After #14, the lowest 4 quiz scores will be dropped. The points for the remaining 10 quizzes (for which there are 100 points maximum) will then be normalized to a maximum of 50 points, and these normalized points will then be the quiz points that contribute to your final point total for the semester.

The deadline for "completing" the homework credit questions will be 11:59PM, Wednesday December 6th, i.e. 2 days AFTER the final exam. Remember, to "complete" a question you only have to have attempted it, it does not matter if you get it correct or incorrect. The number of questions you have attempted is given at the top of the questions page as a number out of 1168, which is the total number of credit questions for this semester. To receive all of the 50 homework points you will have to have attempted 800 of the credit questions. Attempted credit questions less than 800 will earn points proportionally, i.e. 400 earns 25 homework points, 600 questions attempted earns 38 homework points, etc.

Nov 12, 2015
The results for midterm #3 are now posted on the Exam Scores page.  More...
Nov 11 2017
My completed versions of the notes up to the end of Alkenes have been loaded on the lecture notes page. You can use these to make sure that your notes have no errors or gaps.  More...
Nov 9, 2017
To see the new Quiz #12, Click HERE.
The deadline for submitting Quiz #12 is Sunday, Nov 12th, 6PM.

Nov 5, 2017
To see the answer key to Quiz #11, Click HERE.
Nov 4, 2017
Today's (Saturday) Review Session has been posted on the recorded lectures page.  More...
Nov 3, 2017
At the review session today I promised to post a specific kind of Bronsted acidity problem, i.e. one that involved BOTH comparing acidity between two structures AND determining which is the most acidic proton on specific structures. I have now written a new one (and have also just added it to the homework site).
To see the question, click HERE.
To see the answer, click HERE.
To see the video explanation, click HERE.

Nov 3, 2017
Today's (Friday) Review Session has been posted on the recorded lectures page.  More...
Nov 3, 2017
The material for the next midterm is necessarily cumulative, but certainly includes material starting from the start of the NMR section of the notes, up to and including Section 4.5 (Hydroboration; Anti-Markovnikov Addition of Water) in the alkenes notes.

All problems that relate to the reactions we have covered so far (and that are included in the summary posted below on this page), but not reactions involving Br2 or H2 reactions, should be studied in preparation for the midterm if they appear in the "Alkenes products", "Alkene Reagents", "Mechanisms" or "Cumulative Problems" sections of the Alkenes homework.

Nov 3, 2017
OFFICE HOURS TODAY are cancelled, sorry! I have a conflict that I can't get out of. I know that many of you would like to come to office hours before the next test, and so I will be available tomorrow, SATURDAY, in my office 2 - 3PM, just before the review session.

There will be TWO pre-test review sessions, the first will be TODAY, Friday, 4PM-6PM, in PS H-153. The second will be tomorrow, Saturday 3PM - 5PM, again, also in PS H-153. Both will cover different material and both will be recorded.

Nov 3, 2017
The next midterm is Monday Nov. 6th. Normally we would have finished the Alkenes section of the notes, but we are behind this semester. Therefore, I have to include todays lecture as part of the material for the next midterm, so that we don't get further behind. I normally don't include material from a Friday lecture on a Monday exam, but I have to this time, sorry!

The latest material on chemical reactions is a bit different form what we have covered in the course so far. I have a suggested procedure for studying the reactions, click HERE to see a short video.

For my reaction summary, click HERE.

You only need to know the reactions on this summary, you do not need to know the addition reactions that involve Br2 or H2, even though you will see problems on these reaction on the homework site and the old exams etc.

Oct 31, 2017
I apologize for the delay in updating the The Current Points pag, but it has finally been done, with your scores for the first 10 quizzes, AND, your points for the first midterm and second midterm exams after all regrades, Click HERE. Please check to make sure there are no errors.

The regraded midterm #1 and midterm #2 scores are in THIS SUMMARY ONLY, I have not gone back to the original list on the exam scores pages to update those too, take the Current Points page as the definitive list of points.

Oct 31, 2017
To see the answer key to Quiz #10, Click HERE.
To see the new Quiz #11, Click HERE.
The deadline for submitting Quiz #11 is Sunday, Nov 5th, 6PM.

Oct 27, 2017
To see the answer key to Quiz #9, Click HERE.
To see the new Quiz #10, Click HERE.
The deadline for submitting Quiz #10 is Sunday, Oct 29th, 6PM.

Oct 22, 2015
The results for midterm #2 are now posted on the Exam Scores page.  More...
Oct 21, 2017
NOTE: There are two kinds of spectrum solving problems on the homework site, ones that start with a mass spectrum and ones that start with a molecular formula. The former are harder to solve than the latter. I will not ask you to solve a spectrum problem starting with a mass spectrum on an exam, I will give you the molecular formula. I may ask you to solve a problem starting with a mass spectrum on a quiz, but not an exam. For that reason you should probably spend a lot less time, if any, on those problems that start with a mass spectrum.
Oct 20, 2017
To see the new key Quiz #9, Click HERE.
The deadline for submitting Quiz #9 is Sunday, Oct 22nd, 6PM.

Oct 14, 2017
The second midterm is to tomorrow. You are allowed to bring a model kit to the exam to solve conformation problems if it is helpful, HOWEVER, if you do, do NOT bring the entire kit and expect to build a model in the actual exam! You won't have time to do that and you will spill bonds and atoms all over the floor. Instead, bring a PRE-BULT cyclohexane and/or ethane, with some other atoms that can take the pace of the various substituents (don't try to build an isopropyl substituent, use a blue atom in it's place, etc.).

As already posted, the exam will include IR spectroscopy but no NMR.

DO NOT SIT ON THE FRONT ROW IN EITHER EXAM ROOM. The front row should be reserved for those students who arrive late so that they don't have to climb over students who have already started to work in order to find a seat.

Oct 14, 2017
To see the answer key to Quiz #8, Click HERE.

Oct 14, 2017
There will be NO NMR AND NO MASS SPECTROMETRY on the test. IR Spectroscopy is DEFINITELY on the test!

Do NOT sit on the front row in either room. the front row is reserved for late comers so that they don't have to climb all over you who arrived on time to find a seat.

Oct 14, 2017
Today's (Saturday) Review Session has been posted on the recorded lectures page.  More...
Oct 13, 2017
Today's (Friday) Review Session has been posted on the recorded lectures page.  More...
Oct 12, 2017
There will be TWO pre-test review sessions, the first will be this Friday, 2PM-4PM, in PS H-153. The second will be Saturday 3PM - 5PM, again, also in PS H-153. Both will cover different material and both will be recorded.
Oct 12 2017
My completed versions of the Alkanes and Spectroscopy I notes have been loaded on the lecture notes page. You can use these to make sure that your notes have no errors or gaps.  More...
Oct 12, 2017
Midterm #2 material will be from the first 5 sections of the notes, there will be no NMR spectroscopy on midterm #2.
Oct 12, 2017
There is a quiz this week, Quiz #8, Click HERE.
The deadline for submitting Quiz #8 is Sunday, Oct 15th, 6PM. I will post the answer key that evening.

Oct 11, 2017
The projector in LS A-191 failed before lecture today, and so I had to use the whiteboard in class and re-record todays lecture in my office. As often happens when I do a lecture in my office I recorded it in a lot less time that I usually take in the classroom, especially because working on the whiteboard is slow. This is why the recorded lecture is somewhat short this time.  More...
Oct 6, 2017
To see the answer key to Quiz #7, Click HERE.
THERE IS NO QUIZ THIS WEEK, and no class on Monday, enjoy your (short) break.

Sept 30, 2017
Learning how to work with Newman projections and with cyclohexane chairs is tricky at first, the following videos will be helpful (click the titles below).
Newman Projection to 3-D or Sawhorse Structure
Newman Projection to 3-D or Sawhorse Structure using a Model Kit
Chair-chair interconversion for cis-1,4-dimethylcyclohexane (used with kind permission of Professor Stefan Immel, Technical University of Darmstadt)
Cyclohexane
Substituted Cyclohexane
Chair Interconversion Misconceptions
Building Cyclohexane Using a Model Kit
Chair-to-Chair Interconversion Using an HGS Model Kit

Sept 27, 2017
To see the answer key to Quiz #6, Click HERE.
To see the new Quiz #7, Click HERE.
The deadline for submitting Quiz #7 is Sunday, Oct 1st, 6PM.

Sept 24, 2015
The results for midterm #1 are now posted on the Exam Scores page.  More...
Sept 24, 2017
Your quiz scores for all quizzes up to and including #6 have been added to The Current Points page, Click HERE.
Please check to make sure there are no errors.

Sept 24 2017
My completed version of the Resonance notes have been loaded on the lecture notes page. You can use these to make sure that your notes have no errors or gaps.  More...
Sept 22, 2017
To see the new Quiz #6, Click HERE. The deadline for submitting Quiz #6 is Sunday Sept 24, 6PM.

Sept 17, 2017
To see the answer key to Quiz #5, Click HERE.

Sept 1 2017
My completed version of the Bonding and Structure II notes have been loaded on the lecture notes page. You can use these to make sure that your notes have no errors or gaps.  More...
Sept 15, 2017
Today's (Saturday) Review Session has been posted on the recorded lectures page.  More...
Sept 16, 2017
I just realized that you cannot answer Q4 on the latest quiz because you need to know something that we haven't yet covered, therefore, Q4 will be pulled from the quiz, all answers for that question A, B, C or D will be counted as correct.
Sept 15, 2017
Today's (Friday) Review Session has been posted on the recorded lectures page.  More...
Sept 15, 2017
Midterm #1 material will be from the first 2 sections of the notes, no resonance on midterm #1
Sept 14, 2017
To see the answer key to Quiz #4, Click HERE.
To see the new Quiz #5, Click HERE.
The deadline for submitting Quiz #4 is Sunday, Sept 17th, 6PM.

Sept 13, 2017
There will be TWO pre-test review sessions, the first will be this Friday, 2PM-4PM, in PS H-153. The second will be Saturday 3PM - 5PM, in PS H-152. Both will cover different material and both will be recorded.
Sept 1, 2017
Quiz #4 requires you to understand polar bonds and stereoisomers. To see a video review session on these topics, click HERE.
Sept 6, 2017
The best way to visualize rotation around single bonds and lack of rotation around double bonds is using video (click the titles in bold below).
Single Bond rotation
(Lack of) isomerization and single bonds
Single Bond rotation doesn't generate isomers - Proving this with a Model
Why there is no rotation around DOUBLE bonds
Isomerization and Double bonds

Aug 29, 2017
To see the answer key to Quiz #3, Click HERE.
To see the new Quiz #4, Click HERE.
The deadline for submitting Quiz #4 is Sunday, Sept 10th, 6PM.

Sept 2, 2017
We are starting to look at aspects of molecular structure that are 3-dimensional, and are therefore a bit harder to understand, especially pi-bonding. The best way to visualize these things is to make a model, either mechanically or in a computer, as shown in the following small videos (click the titles in bold below).
Pi-Bonds and Anti-Bonds
Visualizing the sigma- and pi-bonds in ethylene using the HGS model kit
Pi-Orbitals in Triple Bonds

Here are some more very small videos that attempt to illustrate some of the 3-D aspects of molecular structure that we have discussed in class recently.
Tetrahedral Geometry
Trigonal Planar Geometry
Linear Geometry
Rotation and Single Bonds

Sept 1 2017
My completed version of the Bonding and Structure I notes have been loaded on the lecture notes page. You can use these to make sure that your notes have no errors or gaps.  More...
Sept 1, 2017
Quiz #3 requires you to work with molecular orbitals. To see a video review session on this topic, click HERE.
Aug 29, 2017
Your quiz score for quiz #2 has been added to The Current Points page, Click HERE.
Please check to make sure there are no errors.

Aug 29, 2017
To see the answer key to Quiz #2, Click HERE.
To see the new Quiz #3, Click HERE.
The deadline for submitting Quiz #3 is Sunday, Sept 3rd, 6PM.

Aug 28, 2017
Your quiz score for quiz #1 has been added to The Current Points page, Click HERE.
Please check to make sure there are no errors.

Aug 27, 2017
To see the answer key for Quiz #1, Click HERE.
I decided that Question #4 was somewhat ambiguous and so ANY answer you submitted for Question #4 was counted as correct.

Aug 27, 2017
The problem with the Quiz Submit has now been fixed, you can now go ahead and submit Quiz #2. The deadline has still ben pushed back to Monday, Aug 28th, 6PM. Thanks for your patience.

Announcements (hit the Refresh button on your browser to make sure that you are seeing the latest version of this page, and every other page on this website)


Aug 25, 2017
Quiz #2 requires you to interconvert between condensed and line-angle structures. To see a video review session on this topic, click HERE.
Aug 24, 2017
To see Quiz #2, Click HERE.

The deadline for submitting Quiz #2 is Sunday, Aug 27th, 6PM. You will not be able to submit Quiz #2 until AFTER the quiz #1 deadline, which is Friday Aug 25th, 11:59PM.

Aug 24, 2016
You can now submit Quiz #1 using the Submit Quiz Tab above.

To see a short video showing how quizzes work in this class, click HERE.

Aug 23, 2017
The second and third lectures have been posted on the recorded lectures page. From now on there will not be an announcement here for posted lectures, just go straight to the recorded lectures page to check, thanks.  More...
Aug 23, 2017
HOW QUIZZES WORK IN THIS CLASS:
Quizzes will be posted here, on THIS PAGE as pdf files. You download the pdf file, work out your answers to the questions, and when the Submit Quiz link opens, you enter your answers, A, B, C or D, to each question. You are allowed to submit answers to the quizzes as many times as you like before the deadline, only the last submission counts. The answer key is posted on this page, as a pdf file, after the deadline.

The FIRST QUIZ is due at 11:59PM this FRIDAY, AUGUST 25th. The first quiz will be a syllabus quiz. After that, ALL subsequent quizzes will be due on Sundays at 6PM. The second quiz of the semester will be due THIS Sunday, 6PM, August 27th. Quiz #2 will be a chemistry quiz.

To see Quiz #1, Click HERE. Do not try to submit Quiz #1 until the Submit Quiz link opens, which will probably be towards the end of the day Thursday August 24th. When the quiz submit link opens there will be an announcement on this page. Remember, late quizzes are NOT accepted, if you have technical or any other problems, this is what the dropped quizzes are for.

Aug 21, 2017
The projector in LS A-191 failed before lecture today, and so I had to use the whiteboard in class and re-record todays lecture in my office. As often happens when I do a lecture in my office I recorded it in a lot less time that I usually take in the classroom, especially because working on the whiteboard is slow. This is why the recorded lecture is somewhat short this time.  More...
Aug 18, 2017
The first lecture has been posted on the recorded lectures page.  More...
Aug 16, 2016
To get a copy of the syllabus for this class, click HERE.

This class uses "gapped notes". You MUST buy a copy of these from the bookstore, they take the place of a textbook, which is not required for this class. If you need a "starter" copy of the notes for the first lecture or two, you can click HERE to download them. This short set will only last 1 - 2 lectures, after that you will need your own copy of the complete set.

Gapped notes from a previous semester WILL NOT WORK, since I tend to change them at least a little bit every semester.

Aug 16, 2016
For a video introduction to the class, the syllabus and how everything is supposed to work this semester, click HERE. This introduction is relevant to BOTH the regular/onground and also the online/hybrid students.

For a video introduction specifically for online/hybrid class students, click HERE.

Aug 16, 2016
The class has a Facebook page, click HERE.
Aug 16, 2016
This class does NOT use a textbook. This does not mean that you cannot use a textbook, by all means get one if you would like a reference book. A good book is Organic Chemistry by Paula Bruice, however, just about all of the organic chemistry textbooks are the same. Used older editions of textbooks are a just as good as the most recent editions and are available for just a few dollars on Amazon. It should be easy for you to find the appropriate reading and problems that relate to the material that we are covering in any textbook, although some textbooks do not cover pericyclic reactions, a second semester topic (the Bruice one does).

Many students will ask me if they should get the textbook. Unfortunately I am not able to give a satisfactory answer, since different students have very different needs. Some students really need to study from a textbook and appreciate learning a topic from a different perspective. Some students want a permanent textbook to study for the MCAT, for example. You have to make your own decision on this I am afraid. However, as mentioned above, I have found that most students in my classes tend not use the textbook.

This course does NOT USE A CLICKER, and you do NOT NEED the 2 additional books that are recommended by the bookstore.

Note that the lab is a separate course, check your lab course website for requirements for that course.


Aug 16, 2016
A Molecular Model Kit, IS REQUIRED for CHM 233. The best kits are the HGS 1013Alpha kit and the HGS 1003Alpha kit. The HGS 1013Alpha kit is available at the ASU bookstore. It is also available on Amazon. The cheapest place to buy the 1013Alpha kit is direct from the manufacturer, followed by Amazon, the bookstore is the most convenient but most expensive.

Do not buy ANY OTHER MODEL KIT, in particular, the Prentice Hall Molecular Model Set For Organic Chemistry (or other kits like it), they make pretty models but is terrible for CHM 233.

Aug 16, 2016
It is not possible for me to give an override into this class since I am not allowed to override the reserved seat assignments or the room capacity. If you really want to get into this class, come during the first week and be persistent in trying to register online. There will be a lot of drop/add activity during the first week, persistence usually pays off. Remember that the class is offered both in the regular onground lecture format and also as an online/hybrid version. Both classes are basically identical. If you are registered for the online/hybrid class you are welcome to attend lecture with the regular class.