CHEMISTRY COMMUNITY

Jason_Glass_2L

I've been listening to a lot of Lauryn Hill, so if anyone hasn't listened to her albums I highly suggest you do.

Jason_Glass_2L

Thank you for making your time to make this! It is really in depth and made very well.

Jason_Glass_2L

Massimo_Capozza_1G wrote:Do we get a equation sheet for the test?

Yes, we get to use the equation sheet he has on his website for the midterm.

Jason_Glass_2L

A similar question, how do I find my classmates posts. The wides range of dates are a bit confusing. I would suggest going to the tab that says new posts and scrolling through those because those are categorized by the time of the last person who posted or commented on the question. Also you can go...

Jason_Glass_2L

To answer both questions of concern, I think the midterm will be taken in our respective lecture times. The material covered in our upcoming exam will probably feature stuff up until the end of Week 3; that's how it was done in 14A, so I assume the same will be done here. Since he combined the sapl...

Jason_Glass_2L

I felt the same as you, and having it online made it feel so much less like a real class and more like a Khan Academy course. I think being in the GroupMe and knowing other people were experiencing the same things as me kept me motivated. Can you post the GroupMe link on here or is there already a ...

Jason_Glass_2L

It will be very similar in format to last years midterms. The only major difference is that it won't be during your discussion time, meaning that everyone is taking the midterm at the same time.

Jason_Glass_2L

LeanneBagood_2F wrote:Adding on to this, does anyone know/has anyone heard how the Zoom calls will work this quarter since we aren't taking the exams during our discussion?

I think it will be very similar to our final, where we would just select the zoom call that was for our discussion section during the final time.

Jason_Glass_2L

Some of my comfort movies are any Incredibles movie, also Turbo is a really silly comfort movie that is pretty good to have as background noise.

Jason_Glass_2L

I took 14A over the summer and used a different textbook. As a result, I am rusty and at the same time new to the course style, content, etc. What should I know beforehand about succeeding in this course? What may seem optional but really should be mandatory? Something that seems optional but shoul...

Jason_Glass_2L

A study habit you should definitely implement is doing more interactive studying. By having someone explain a problem step by step, and you being able to clear up questions right on the spot really helps with confidence on the material for the exams.

Jason_Glass_2L

Cooper Kinne 2E wrote:We'll still be in a zoom call with our TA, though, right?

Yeah I'm sure we are still doing the monitored exams with the zooms still.

Jason_Glass_2L

Another tip is to utilize the search function in the quick links tab. If I have a question on sapling and I don't really want to wait a long time for a response, I just search sapling in the searchbar and try and find the question number.

Jason_Glass_2L

Well, my goals for this year is to get a better grade in this class than I did last quarter. Learning to cook better is also on the list too.

Jason_Glass_2L

To add on, a good way to visualize this is like a see-saw, if Q>K, the amount of products would be greater than at equilibrium because =Products/reactants. We want the the amount on each sides to reach equilibrium, so we would favor the left (reactants) side to do so.

Jason_Glass_2L

It will usually say in the question which K they want, but if it isn't stated, then just use what ever information is given. For example, If moles and volume are given you would use Kc and if a partial pressure is given then you use Kp.

Jason_Glass_2L

You can attempt it as many times as you want, just don't press the give up button because I think it won't give you points then.

Jason_Glass_2L

Thank you for the encouragement. Hopefully all the studying we have done will end up paying off. GL for tomorrow everybody!

Jason_Glass_2L

I would make an outline highlighting only key concepts for each topic. It would be good to have 3-4 bulletpoints for each topic so you don't clutter your page. The concepts are probably the things that will reoccur in future classes, so I wouldn't spend time focusing on the little details.

Jason_Glass_2L

Thank you for the wonderful learning experience you provided for 14A. Even with COVID, this class was amazing to take!

Jason_Glass_2L

I'm coping my anxiety by taking intermittent breaks to do things I enjoy more because studying for too many hours straight make anxiety even worse for me.

Jason_Glass_2L

I'm pretty sure its the same as the standard grading scale at UCLA, where >93 is an A, and a number inbetween 93 and 90 is an A-.

Jason_Glass_2L

I'm going to try and go to all the review sessions because those are probably more productive than me studying on my own.

Jason_Glass_2L

Matlynn Giles 1A wrote:I would try looking at the ligand sheets or quizlets to help with naming ligands! Found it super helpful!

Here is the link to the ligand naming sheet that Lavelle has on the website for easy reference.
https://lavelle.chem.ucla.edu/wp-conten ... pounds.pdf

Jason_Glass_2L

There won't be many questions on naming, so you should still study it but not as much as other things like the person below said.

Jason_Glass_2L

He said our grade would be a raw score right? Like he wouldn't curve it?

Jason_Glass_2L

I'm sure they would be fairly similar or else he would have informed us otherwise, so I assume you would need a secondary device.

Jason_Glass_2L

I think the format and type of questions will be very similar to the midterms but with just a larger volume of problems.

Jason_Glass_2L

Yes because Pi bonds are only seen in double and triple bonds, where a double bond has 1 pi bond and a triple bond has 2 pi bonds.

Jason_Glass_2L

To add on to this, are there any Lewis structures that you all think we should all be pretty solid with? Like not necessarily know them by heart but be able to do them with ease if that makes sense? The lewis structures we should be probably be able to do by ease are lewis structures similar to tho...

Jason_Glass_2L

I would try and memorize all of them because it seems like any of them are likely to show up for the exam. If you can't memorize all of them, I would try and memorize the lower bond pair shapes as they are more likely to show up because they are more common.

Jason_Glass_2L

Since there is so much more time, do you guys think he will make the test harder but keep the same amount of questions or make the test the same but add a lot more questions?

Jason_Glass_2L

You should definitely try to study now by allotting time to each topic every day. Also, going to the step-up sessions helps more than you would think.

Jason_Glass_2L

The finals are cumulative, but I'm pretty sure more of the final is going to be focused on the last topics we learned rather than anything else.

Jason_Glass_2L

Also, make sure you have 5 posts/week. The chem posts don't carry over week by week if you have more than 5. You can check the specifics by clicking the 3 bars next to quick links and clicking "Your posts." There, you can check when you posted by clicking on the particular topic and searc...

Jason_Glass_2L

Yeah, LDF happens between all molecules, but the degree of the strengths may be different depending on the size of the molecule. Larger Molecules will have larger LDF and molecules with more electrons will have stronger LDFs.

Jason_Glass_2L

Yes, you should be fine. Lavelle is probably going to add much more seats into the class.

Jason_Glass_2L

This one just has a lot more concepts than the other midterm which is making me nervous. I don't want to mix the trends up.

Jason_Glass_2L

It's the same amount of time, the 6 minutes is just the extra if there are issues setting up.

Jason_Glass_2L

I've been trying to skateboard because it seem to exert a lot more energy than I thought initially. I didn't think I would get so much more exhausted by skateboarding rather than running.

Jason_Glass_2L

Can only elements in the 3d have an expanded octet or is it any element in the d subshell?

Jason_Glass_2L

Intermolecular is between other molecules, and Intramolecular is within the molecule. Also as a sidenote to remember, Intramolecular forces are stronger than intermolecular.

Jason_Glass_2L

I believe that taking Bio and Chem aren't that bad because some of the topics are connected. The work load is a lot, so since we are also in quarantine with not much to do, it is definitely something I would suggest.

Jason_Glass_2L

Yeah, thinking about your grades is natural. Something I would suggest to relief your worries is to think back to what you did good and bad on during the first midterm because that will help you feel a little more confident in your ability and understand your previous mistakes.

Jason_Glass_2L

One thing that has been very helpful to me is to keep you phone in another room, because then you won't even think about accessing your phone. Also I would suggest in getting some sort of earplugs or earmuffs if your surrounding area is very loud.

Jason_Glass_2L

305614361 wrote:What does it mean, if someone question is endorsed?

I think endorse means one of the moderators thought that the answer someone gave was a very good answer, so they endorsed it so students would refer to that answer.

Jason_Glass_2L

A good way to remember the difference is to think of a covalent bond like a COUPLE in a relationship, because you have to share. But for an ionic bond, you are INDIVIDUALS, so you don't want to share and keep everything for yourself.

Jason_Glass_2L

Hello! A wavelength can never be negative.

Jason_Glass_2L

mlouie_1I wrote:I don't know when the grades will be posted, but questions are weighted differently and under the midterm on CCLE, it says "higher point questions have partial credit for some incorrect answers".

Does that mean this midterm won't be curved for sure now?

Jason_Glass_2L

I would recommend you to rewatch Spongebob episodes. I was recently rewatching many of the episodes and there were so many cool little details in the episodes that I missed when I was younger. Also, when TV shows pick up with new episodes, I suggest you to watch Stumptown because the lead character ...

Jason_Glass_2L

So I know there are two formulas and one of them is v = R(1/n^2 - 1/n^2) . I understand that when an electron absorbs a photon, it moves to a higher energy level and the energy is positive. Why do I calculate a negative value using this equation when moving to a higher energy level? For example, le...

Jason_Glass_2L

I followed these steps and ultimately arrived at a situation where I knew everything except the values of n1 and n2 inside the brackets. Is there no other way of solving other than guessing and checking? Am I missing some extremely obvious trick of algebra? Hello! Since this is a Balmer series (bc ...

Jason_Glass_2L

Hi! I'm basing the definition of n1 and n2 from the constants and equations sheet we need printed out for the midterm. n1 would be considered the final energy level and n2 would be considered initial energy level. Now I'm kind of confused. I thought N1 is initial and N2 is final because if you deri...

Jason_Glass_2L

Yeah E is the same thing as 10^_ on a calculator. One thing about 10^ that's different than E is that you may need to add parenthesis when you use 10^ if the exponent is in the denominator so the calculator will divide as you intend.

Jason_Glass_2L

My TA also said that you can use any calculator because a graphing calculator will not give you any specific advantage over scientific for this exam.

Jason_Glass_2L

Hello! Just to add on, make sure you don't have any markings on your equation sheets before you start the exam because then the TA wont allow you to use it then.

Jason_Glass_2L

To add on, I realized you said that you plugged in n=4 into n1 and n=2 into n2. Just remember for the Rydberg equation if the negative isn't factored out with the R constant in the equation, the n that comes first in the equation will be your starting n level and the n that comes second in the equat...

Jason_Glass_2L

We can use our phones for a webcam, but our phone camera has to be angled so the TA can see our workspace.

Jason_Glass_2L

Would it be worth it to go to multiple step up sessions? I am assuming they are covering the same topics, so I wasn't sure if I should still attend multiple sessions or if I should just go to one step up and a workshops instead.

Jason_Glass_2L

I would honestly doubt we would need to know that type of information because this class is more conceptually based than memorization.

Jason_Glass_2L

Quick question, classical mechanics pertains to things you would learn in physics while quantum pertains more to chemistry right? I know there is a strong overlap between both chemistry and physics so it won't be definitive, but is this generally true?

Jason_Glass_2L

When you are on the homework problems for sapling, there should be a tab that says resources, and from there you can click on the textbook and look through it. I using the free trial still and this was how I access the textbook. Hope this helps!

Jason_Glass_2L

Yes please! It really brings up my day every time I see Lavelle vibe to music.

Jason_Glass_2L

You are probably going to want to keep the most accurate values until the final answer. If you want to make things easier, if you know the answer would be 4 sig figs, I would round the numbers before to 5 to six sig figs to stay safe of missing the answer by a 0.001. Another thing you can do is use ...

Jason_Glass_2L

For office hours, is it ok if we just come to listen to others questions or do we have to come with questions ready?

Jason_Glass_2L

That makes sense, so this means that there would be another one drawn or the number of moles would be written in the question. When you say write the formula for the given diagram, how would we know the formula? Wouldn't we have to look it up?

Jason_Glass_2L

When I was doing number 10 on the homework, I kind of assumed that the number of moles of 2-butane was equal to the number of 3-methy-3-hexanol because I never saw anything stated in the problem. How would I actually know the ratio for a problem similar (for example maybe the product of the problem ...

Jason_Glass_2L

Quick Question: Since some periodic tables only go to 4 sig figs and some go to 5 sig figs, which one should we use for the class? I ask this because I feel like if I use a table with a 4 sig figs I might get an answer off by like 0.01 which would be marked as wrong.

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