CHEMISTRY COMMUNITY

KayleyW_3L

Maya Beal Dis 1E wrote:Would it be possible that the final curve of the overall class would make it so you need higher than a 93% to get an A? Would he curve the class up?

I don't think he'll ever curve the final grade down. From what I've heard from my TA, he will only ever curve the final grade in people's favor.

KayleyW_3L

Yikes, the feeling when I've been sleeping bad half the quarter, lol.

KayleyW_3L

I'm still confused on how we find out about step up sessions. Is it on chem community? It's on his class website (not the chem community forums). https://lavelle.chem.ucla.edu/wp-content/supporting-files/Chem14A/Chem14UA_PL_ALL.pdf These are the most updated complete list of sessions which include ...

KayleyW_3L

For the compound [Co(NH3)5(SO4)]^+

What determines the order of the compound's name? I originally thought the answer was sulfatopentamminecobalt (III) ion, but I got the order incorrect. Why does the "pentammine" part go before sulfato in the name? Thanks.

KayleyW_3L

According to chem mod in another post regarding this table, it's recommended to memorize the entire table, EXCEPT for the structure of edta

KayleyW_3L

He's going to finish lecturing on Wednesday, and then Friday will be review! According to his Review sessions link, he'll be going over past exam questions that will help us prepare.

KayleyW_3L

I'm not too sure, so don't quote me on this. But won't the average be curved to a B- or something like that (if the average raw score is lower than a B-)? I've heard that in people's examples for how Lavelle will curve the overall grade, but I don't know for certain.

KayleyW_3L

I think I have the concepts down pretty well from lecture and I do all of the homework problems. But, when I take the tests I kind of blank and I think it's because I get kind of nervous. Does anyone have any advice for that? Don't drink too much coffee beforehand. Plus do practice problems. This!!...

KayleyW_3L

I wish Lavelle had bruincasts or would upload his lecture slides. However, the next best option for you is to review the textbook readings and attend peer learning sessions.

KayleyW_3L

He just uploaded all the information regarding review session hours today! https://lavelle.chem.ucla.edu/wp-content/supporting-files/Chem14A/Final_Review_Sessions_14A.pdf

The review sessions are starting tomorrow.

KayleyW_3L

I feel like it wouldn't be very efficient of TAs to check the points weekly, but I don't know for sure. Best to try posting weekly just to make sure. Although I have messed up a few times to be honest.

KayleyW_3L

I believe it will be cumulative with an emphasis on the material taught later in the quarter.

KayleyW_3L

Yeah I think it'll be split by last name like the previous time.

KayleyW_3L

I really like watching educational chemistry videos like on khan academy and youtube, while working through practice problems. My attention span is pretty bad though too, and I can only do this for short periods at a time. But it's definitely good to start earlier!

KayleyW_3L

In past exams Lavelle seemed to include mainly calculations-based problems. But ever since this year or so, he's included a lot more concept-based questions

KayleyW_3L

Cindy Adiwidjaja 1E wrote:I saw from previous years' posts that Lavelle also adds 10 points to every one's score out of 500. I do not know if this is still true, but this popped up a lot in Chemistry Community.

Wow that would be very nice of him! So it's kind of like extra credit? I hope he does this

KayleyW_3L

Since the final exam will be cumulative, do you think that its review sessions will cover past material as well?

KayleyW_3L

I can only find that the final is worth 180 points on the syllabus, but it doesn't specify how long it is.

KayleyW_3L

Yes, unfortunately we got a class lecture cancelled previously due to the Getty Fire a few weeks ago, so Lavelle is still holding lecture on Wednesday to make up for that.

KayleyW_3L

Either in our next discussion, or the TAs might upload them on our ucla gradebooks whenever they're done so we can know our scores as quickly as possible.

KayleyW_3L

I think I'll go over the midterm and tests, and understand what I did wrong. I'm going to start going to more peer learning sessions to get some tips from the UAs and TAs.

KayleyW_3L

This class has been difficult for me, despite having taken AP chem before. Mostly because the material is presented in a very different way here than it was in high school.

KayleyW_3L

GEOVANNAO_3F wrote:so to clarify, the class is not curved, but a grade is assigned at the ended based on the class average?

Yes, this is correct.

KayleyW_3L

Wow, thanks all, I'm kind of relieved there are a few others who understand my struggle. And I appreciate all of the suggestions!

KayleyW_3L

Yes, all diatomic molecules have a linear molecular shape, because the only way to connect them is with a line.

KayleyW_3L

I still have yet to take test 2 as well, but I believe it will test on VSEPR, IMF, types of bonds, polarity, and molecular shapes.

KayleyW_3L

Has anyone found the peer learning sessions to be helpful? I've only been to a few peer learning sessions so far, but in my experience they've been helpful because they go over and reinforce key concepts. If you have any questions about concepts they will explain them in-depth. This is my experienc...

KayleyW_3L

Quarter system goes by so fast and I'm still traumatized from the midterm. I've fallen behind and am lost on the current material. Would the best way to review be to read the textbook for the current topics? Thanks for any help

KayleyW_3L

The good thing is he will never curve down, only up.

KayleyW_3L

Are the homework problems for this week from any section, or should it be from chemical bonds?

KayleyW_3L

Does anyone know if we can use whiteout during the midterm exam? I know we are supposed to write in pen so I was wondering if we could use whiteout since we do have a limited amount of space to do calculations. I assume he would not prohibit us from using whiteout, especially since it can help keep...

KayleyW_3L

Is there a list where I can view all of the workshop worksheets (if there are more)? In addition, are there solutions posted for them?

KayleyW_3L

On the bright side, we will be done with the final earlier and get it over with quickly.

KayleyW_3L

According to a UA, there will most likely be one question involving the Fundamentals.

KayleyW_3L

Thank you for your help, guys.

KayleyW_3L

I would also highly recommend Khan Academy to study for material, because it explains concepts and reinforces ideas in your mind.

KayleyW_3L

I have a mandatory training for a club on Monday evening so I might miss the review session that starts on Monday. However, I really don't want to miss any important information. If I can't make it to the session, will later ones cover the same material?

KayleyW_3L

Has anybody met up yet for a study group?

KayleyW_3L

I have been working through textbook problems and the learning modules to study

KayleyW_3L

I would also keep an eye out for the Hammer Museum. During midterm and finals season sometimes they open their building as a study space for students!

KayleyW_3L

My TA said that the homework problems can be from either the Quantum World or from Chemical Bonds.

KayleyW_3L

Problem 1A9: "A college student recently had a busy day. Each of the student’s activities on that day (reading, getting a dental x-ray, making popcorn in a microwave oven, and acquiring a suntan) involved radiation from a different part of the electromagnetic spectrum. [etc] " I was able t...

KayleyW_3L

Thank you, all. I wanted to make sure I wasn't misunderstanding something and am glad it's a typo!

KayleyW_3L

1A7b asks " When an electron beam strikes a block of copper, x-rays with a frequency of 2.0x 10^18 Hz are emitted. What is the wavelength (in picometers) of these x-rays?"

For my answer I got 150pm, but the textbook answer says 150nm. Is this a typo on the textbook's end?

KayleyW_3L

In addition to wondering when the Test 1 grades will be posted, I am also curious whether there is partial credit on the exams?

KayleyW_3L

Cassandra_1K wrote:Any tips on what to focus on while studying?

I would suggest understanding the homework problems and the lecture slide material from Lavelle's Fundamentals review.

KayleyW_3L

Thank you, I see! So I should could technically use scientific notation for 0.0134, but it is generally not as often used for when the power of ten is (negative) 3 or more.

KayleyW_3L

I'm still a little confused as to when I should use scientific notation or not. For example, the textbook solution for Fundamentals E.23 part a is 0.0134 mol Cu^2+, while the solution for E.23 part b is 8.74x10^-3.

Why did they decide not to use scientific notation for part a?

KayleyW_3L

I'm sorry, I have completely forgotten at this point. But if you believe it to be yours, ask the Young hall front desk.

KayleyW_3L

I turned it in to the front desk at Young Hall. Also thank you again for helping me out with the notes today, absolute life savior. I hope you read this post and get your bottle back!

KayleyW_3L

I'm interested as well!

KayleyW_3L

You should use the information given in the problem to determine the value with the lowest number of sig figs. Even if you use 1.01 for Hydrogen in your calculations, unless that info is given in the problem, use the lowest value sig figs from the original info.

KayleyW_3L

Can you explain how in #1, 5293 has 5 significant figures? I'm confused since I think it should be 4, but I might be missing something.
Otherwise, these tips are very helpful and thank you for sharing them.

KayleyW_3L

Hello, I'm booking my flights back home for Thanksgiving break currently, and I was wondering whether anybody knows if we will have lecture on November 27 (Wednesday). Apologies if this is a silly question. My other class that attends Wednesdays notified us that meeting will be cancelled, so I wasn'...

KayleyW_3L

Is the method of solving this question really as simple as seeing that (210 g/mol At) / (70 g/mol Ga) = 3, and therefore there must be 3 At atoms to balance out 9 Ga atoms since At is three times as massive as Ga ? Let's say the numbers were not as clean and involved decimals. Would the method of so...

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