CHEMISTRY COMMUNITY

AliAsh 1H

I downloaded mine so I really suggest you do the same because I struggled with it at first too

AliAsh 1H

The review sessions that Dr Lavelle has been mentioning in his emails seem to be a really good way to go over everything we studied this quarter so definitely look into that!

AliAsh 1H

almost_ethan wrote:So are the midterms curved too or just the final grade?

I'm not sure if the first midterm was curved but my grade changed after a week. I'm not sure if that was bc of partial credit or an actual curve tho

AliAsh 1H

Thank you so much! this is actually pretty important to keep reminding ourselves of bc the quarter system can get really stressful and hectic

AliAsh 1H

Hey, I just wanted to say that no matter what you decide to do, remember that UCLA doesn't require you to declare a major up until the end of your sophomore year I think. So don't feel pressured to pick a major right now, and try to take diverse classes just to find what you are interested and passi...

AliAsh 1H

tholz11 wrote:Did we receive partial credit for Midterm 2?

I think since all the questions on MT2 were worth fewer points than the first, no partial credit was given.

AliAsh 1H

Both textbook and sapling problems are really helpful. I usually go through the solutions for the sapling problems to make sure I know why and how I got each answer

AliAsh 1H

I have been going back to the Sapling problems and reading through all the solution guides to make sure I know how I got each answer. This has honestly been SO helpful

AliAsh 1H

I would make friends with green but still keep my distance

AliAsh 1H

t_rasul3I wrote:I once emailed Dr.Lavelle about Chem Community and he verified that if you are missing a couple of points here or there from CC, you can still make up for those by the end of the quarter.

Yeah I missed some points but then made up for them in other weeks and they still got counted.

AliAsh 1H

I always think of viscosity in terms of water and honey. honey is very thick and isn't easily deformed, which means its particles are more tightly held together, Water is the opposite, which means its intramolecular forces arent as strong.

AliAsh 1H

I don't think H atoms that are bonded to N, O, or F ever have a lone pair. So no, H atoms don't need to have one, only the atom they are attaching to does.

AliAsh 1H

Yes. They are very unstable and temporary forces, but they do exist between all molecules

AliAsh 1H

It means the probability that an electron could be in a certain place, which explains why there are nodes in orbitals, which are places with zero electron density, hence there can't possibly be an electron at that exact point.

AliAsh 1H

Some people said that this was harder than the first but I honestly felt the opposite. Maybe I was just better prepared this time hahah. Hope you all did great though!

AliAsh 1H

I remember reading that it is cumulative, so everything we've studied so far and some more

AliAsh 1H

I was also kind of confused about this but then I watched this video and it helped clear it up for me. Hope it does the same for you! https://www.youtube.com/watch?v=l1GgVwqiufE

AliAsh 1H

I'm hoping they won't take as long as last time since there is no partial credit to be counted this time, nor have I heard of anyone mentioning questions with mistakes. I'm just hoping though I guess only time could tell

AliAsh 1H

So if a question asks to find the number of the electrons in the expanded valence, does that mean the total number of valence electrons or is it just the number of electrons after the 8? I'm not sure if my question makes total sense but I was so confused about this question on the MT

AliAsh 1H

Sukhkiran_Kaur_3F wrote:I think our class is out of 500 pts, and it's probably the regular scale where 93% and higher is an A/A+, 90% and higher is an A-, and so on.

Yeah Im pretty sure I read somewhere that this is how its broken down

AliAsh 1H

You can access them on both CCLE and MyUCLA!

AliAsh 1H

"the name is Bond, Hydrogen bond"

Lavelle-2020

AliAsh 1H

Watch a good 2000s throwback movie, listen to uplifting music, spend time with family, or generally do anything to relax and forget about schoolwork for a bit.

AliAsh 1H

I felt the same way and then I read that studying somewhere with more sunlight gets you to be more focused and productive, and honestly, it kind of worked. Also I know some people feel better studying with some background or white noise so maybe you could give that a try!

AliAsh 1H

going for a run at sunset supplies me with enough serotonin to get through a whole week, so I definitely recommend that if you are into running, but any activity during that time would work

AliAsh 1H

you need 35 by midnight today, and then 5 more for every week after. you should have 50 by the end of the quarter so you can get all the 50 points available

AliAsh 1H

Also Modern Family is a very underrated one! that show is so funny yet a lot of people didn't know anything about it before it was on Netflix

AliAsh 1H

I think I remember Professor Lavelle saying in a lecture that the elements that we are most going to encounter in the course with an expanded valence shell are Si, P, and S, or anything under them in the p-block

AliAsh 1H

Don't stress too much about it you need 50% to pass and keep in mind you have all the extra points for posting on CC and HW and there's still a final exam that you can study hard for in order to improve your grade!

AliAsh 1H

Im pretty sure 12 units is the minimum you need

AliAsh 1H

for recent/new shows, I would 10/10 recommend Ozark on Netflix. If you are looking for a shorter series, WATCH the haunting (either Of Hill House or Bly Manor). 1000/10.

AliAsh 1H

Call out green he's very sus

AliAsh 1H

Andy Hernandez wrote:What are the negative impacts of changing it to pass/ no pass?

some majors require you to take certain courses as a letter grade, so you should always check the department's rules on whether you can take certain classes as p/np, or if there's a max number of them you can take per quarter.

AliAsh 1H

I ain't never seen two metals forming an ionic bond. its always one of em gotta be an ugly nonmetal

AliAsh 1H

As I was going through the HW, I was constantly confused as to how we determine exactly which structure of a molecule is most plausible. Is it just the one with the least number of formal charges on it?

AliAsh 1H

Brendan, "Don't look at me Everyday is so wonderful Then suddenly It's hard to breathe Now and then I get insecure From all the pain I'm so ashamed I am beautiful No matter what they say Words can't bring me down I am beautiful In every single way Yes words can't bring me down Oh no So don't y...

AliAsh 1H

to add to all the other replies, the reason why some atoms form covalent bonds instead of ionic bonds is that they have similar electronegativity, which means neither of them has a stronger "pull" on the electron, so they just share it.

AliAsh 1H

I tried to think of an original chem joke, but I cant Zn of one

AliAsh 1H

you can think of it as the quantum state of an atom's electrons in a specific area around the atom. hope this helps clear it up for you!

AliAsh 1H

I found this link that has everything you need to know about changing your grade type. Hope this helps!

https://www.registrar.ucla.edu/Registra ... ding-Basis

AliAsh 1H

You just need the v= $\frac{h}{m\cdot \lambda }$ equation. v being velocity(or speed), m being mass, and $\lambda$ being the wavelength. since the wavelength is the same, you just need to change the mass for each particle. make sure you convert the mass to kg before solving it!

AliAsh 1H

I think the issue might be in the accuracy of your answer. I just plugged it in and got 12373 as an answer. maybe this answer would work?

AliAsh 1H

You have to make sure that the two ends of the waves line up, in order for there not to be any gaps. hope this clears it up for you!

AliAsh 1H

I just use the equation: $\nu = \mathbb{R}(\frac{1}{n{_{1}}^{2}}-\frac{1}{n{_{2}}^{2}})$ . and then use the frequency to get the wavelength through the lambda=c/v equation.

AliAsh 1H

Are there any past midterm exams available for us to go over and get familiarized with the structure of the test or no? I looked a little but cant seem to find any.

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