Final Exam: Friday, Dec 18 4:00 – 6:00 pm Thompson Hall 102/104
Bring: Calculator, TWO sharpened pencils with erasers, Student ID.
Provided: Periodic table, necessary equations, solubility rules
Midterm Format: 52 multiple choice questions. 50 Qs will count x 2.4 pts/Q = 120 pts.
Final exam information
102/104 Thompson Hall
multiple choice; bring pencils, calculator, student ID
Midterm 3 Topics
Chapter 8 (all) and 9 (section 9.1 and 9.2).
Review 4:40pm on Friday December 4 (ISB 135)
Exam forms, answers, histogram of scores
Midterm 2 Topics
Book: Chapter 3 (oxidation numbers and redox reactions) Oxidation numbers
Chapter 5, 6, 7 (entirely)
Common oxide, hydride, and halide for s-block and p-block elements (table 21.2 and 21.3)
Mock Info sheet for exam 2 (may change slightly)
Oct 2 Review
Midterm 1 Topics
Chapter 1 — Basic Concepts of Chemistry
Let’s Review — Tools of Quantitative Chemistry
Know the metric system prefixes (table 2, page 26)
Chapter 2 — Atoms, Molecules and Ions
Know the names of common poyatomic ions: table 2.4 (pg. 74)
Chapter 3 — Chemical Reactions.
Everything Except for section 3.8 (Redox reactions) .
Know the strong acids and strong bases listed on table 3.2 (pg. 132)
OWL Homework
Lecture Notes
Demos – For each be able to complete the statement ….
“In class I demonstrated XXX. This was to illustrate ….”
- – Make-up exams will be given only in the event of severe illness, family emergency, military obligation or other extraordinary reason. Contact me.
The class did very well on the first exam:
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What is the correct answer for the Hund’s Rule question on MT2 (#12)? I remember that there was some issue with this question.
all the answers keys are there when you click on the tab exams..
where can i find the answer key to exam 1???
where are the answers for ex am 3?
I know this may be a bit hasty but are you going to post a practice final exam on here soon?
Will you provide a practice exam with the solutions for the final exam so that we can prepare for it? Thanks.
Prof. Knapp,
I noticed the place for the final exam is in two rooms, I was just wondering if we were suppose to go to a certain room or something.
Thank you!
Madeline
Azeezat,
recheck your structure for XeF2. In this molecule, only single bonds are used, which leads Xe to exceed the octet, but keeps formal charges at zero for each atom.
bond energies and enthalpies (page 391). If you need values, they would be given on the exam.
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hi,
If the central atom does not have a complete octet and double bonds are added but the formal charge of the central atom is larger then that of the terminal atoms is it better to not add double bond and just add lone pairs instead. Ex. XeF2
I think they will just be given along with the question if one of those questions shows up. Basically the same format as the one that was on the practice exam. I just wanted to confirm if in question 16 of the practice exam, the fixed electrons are the lone pairs situated around the terminal atoms and the electron pairs are the pairs found in the bonds between atoms, right?
the study guide says there we need to know reaction enthalpies, but on the practice exam it doesn’t give any of the known enthalpy values. Did Knapp say anything about giving them to us on the exam tomorrow?
You are not required to calculate a dipole moment. But you do need to be able to connect geometry with polar bonds, in order to figure out whether molecules are polar.
Hi Devin,
you should definitely know how to calculate formal charges and oxidation states. Especially since these ideas are very important in drawing good Lewis dot structures.
Hi Katherine,
yeah… Most of Friday was spent on a review of concepts from Ch8/9 in the form of various PRS questions. The newer material (molecular orbitals description of benzene pi-orbitals) is not on the exam. But you do need to know the reading from Chapter 9.1 and 9.2.
Devin,
I couldn’t make the review session, so I don’t know the exact question, but my guess is we will need to know both concepts, but probably not as a comparison. There’s only 26 questions on the test; I don’t think that this is in the top 26 concepts that we learned in chapter 8 and 9. Just a guess,though.
Hey does anyone know how much of Friday’s lecture will be on the exam? I thought prof. Knapp said some information would only be showing up on the final, but I didn’t get any specifics.
I just had one question though. We are only required to understand how dipole moments function, and not how to actually calculate them to values of D (debye), correct?
Sorry about that, I was just finishing something, and I don’t think I answered your question very thoroughly. I should have said that you just need to know that formal charge and oxidation numbers are two different things, but I don’t see any reason for him to provide us with a question that asks if an example shows an oxidation number or a formal charge. If you can find the formal charge on a molecule and the individual atoms, you’ll be fine. I could be wrong, but that’s what I was lead to believe. Hope this helped.
Well, Everything in chapter 8 and chapter 9 sections one and two, and I don’t believe oxidation numbers came up. Just focus on the material in thebook, and you should be fine.
During the review someone asked a question about the comparison between formal charges and oxidation numbers. Professor Botch said that she will not test on that but Prof. Knapp might. Does anyone think that will be on the midterm?
Thanks
Laura,
The midterm #3 practice exam is under the “home” tab this time. Scroll down just a little bit and it should be there, along with a study guide and a table of geometries.
Hi, i am unable to find the practice midterm #3, where is it posted?
thank you.
Is there a practice midterm 3 posted? I can’t find it.
thank you.
It is posted.
When will a practice midterm 3 be posted onto the blog?
I believe he said that he scales them at the end of the semester.
I’m assuming they are not scaled yet since he probrably hasn’t finished grading the make-up exams yet, but judging from hearing how people did i would assume he would scale a little bit but nothing too miraculous
Are the exam grades that are currently posted scaled or not scaled??
it’s at the top of this page(or the section on this page about exam 2 topics called examview test 2. then you come to another screen then you click the same link again.
Yeah, I can’t find them anywhere, I looked under each section too.
I got an e-mail from professor Knapp saying the exam 2 key was posted but I don’t see it on this page. Does anyone know where to find it?
when will the answer key for Exam #2 be made available?
Prof. Knapp or anyone who can help,
Late cruching, but does z effective increase or decrease across the period?
How do you know if a quantum number is invalid?
how do you find out if a quantum number is invalid?
frequency is inversely proportional to wavelength
How are frequency and wavelength related?
Will we have the orbital chart or should we memorize it?
Does anyone remember what date the owls started for Exam 2?
Will we have the equation for specific heat and/or a chart for them during the test?
Julia/Stephanie,
I believe each test is 17% of our grade because that’s how much the lab counts for (as stated on the syllabus), and they’re all worth 100 points.
Tom,
Work by a reaction, or a system, is part of the equation that deals with change in internal energy. U = Q – W. U is the change in internal energy while Q is the heat added or taken (+ or -) from the system and W is the work (Pressure * Volume) Done by or on the system (represented again with a + or -). Its discussed in Chapter 5 with the book, the dry ice, and the ziploc bag. Good luck!
Ben
Adam, I was just on this question myself. According to the review where this question was discussed, the 25 J of energy that is released as heat is part of the overall U of the first part of the question. Therefore, we just need the data that U = 20J.
Ben
Neha,
I’m pretty sure you have to memorize them.
1) H is +1
2) free elements are 0
3) O is -2
4) the sum of the oxidation numbers = charge
On that note, question 9 talks about 25J of heat being released on the surroundings. Why does this not factor into the total internal energy?
Tom,
work done on a system means that energy is gained which means that w is going to be greater than zero and delta E is going to be positive. Work done by the system means that’s that energy is lost which means that delta E is going to be negative. Because if a system is doing work, it is going to lose energy. I think about it in the way that your own body is a system, and lets say you exercise. When you exercise your burning cals and losing energy. Hopefully that makes a little more sense.