CHEMISTRY COMMUNITY

Jchellis 1I

Thank you!

Jchellis 1I

So we need to be able to find the intermediate for the final?

Jchellis 1I

Would anyone be willing to post pictures of the last few problem solutions?

Jchellis 1I

I think it says you cannot pass with under a 50% but it does not specify if you will if you have over.

Jchellis 1I

Thank you! I will check with my TA

Jchellis 1I

Does anyone know the percentage of questions from each unit will be on the final?

Jchellis 1I

Did anyone go to Morris's review session today that would be willing to post their notes? I find his sessions really helpful but I was not able to make it today.

Jchellis 1I

Are significant figures something we are being graded on right now? It seems like he had been pretty relaxed about them recently.

Jchellis 1I

What does the single line represent then? I thought the single line was the salt bridge?

Jchellis 1I

Sometimes it seems like in the homework that sometimes both are losing electrons? Which one is the oxidizing agent in that case?

Jchellis 1I

Is it okay to turn in homework from topics we went over in the beginning of the quarter if we are using it as review for the final?

Jchellis 1I

I don't think it says that C- is passing in the syllabus but that has seemed to be the case at least in 14A.

Jchellis 1I

So it is the -e- that is in your reaction.

Jchellis 1I

Was this covered in class? Or were we just expected to know it?

Jchellis 1I

Wait do you put the OH- on the same or opposite side of H+?

Jchellis 1I

I know people who have even saved their chem labs until they completed the rest of the chem series and they said it was fine.

Jchellis 1I

Yes but q is energy lost as heat it does no work.

Jchellis 1I

More examples could be a cup (open), a jar (closed), and a cooler (insulated).

Jchellis 1I

We only have two tests this quarter for 14B though, right? Wasn't it changed?

Jchellis 1I

You can do the homework on anything that we have covered, whatever you feel like you need to review the most.

Jchellis 1I

I don't think Lavelle gives solutions for the tests but I'm sure you could review it with your TA during office hours.

Jchellis 1I

I know sometimes Lavelle dedicates a class or two to review as well as the provided sessions from the TAs.

Jchellis 1I

Is combustion even reversible with added energy?

Jchellis 1I

Yes, I believe if it gives off heat it would be negative delta H.

Jchellis 1I

So both creating steam and boiling water are exothermic?

Jchellis 1I

I thought that salt was usually a product?

Jchellis 1I

How do we know if the acid is too strong for an ICE table?

Jchellis 1I

Can the Q value change if the pressure is changed?

Jchellis 1I

Do we only use the ICE table when dealing with homogeneous reactions?

Jchellis 1I

So can there be only one value for K but multiple values for Q as the reaction progresses?

Jchellis 1I

So because they are constants they have no effect on whether the reaction favors the reactants or the products?

Jchellis 1I

There are even Khan Academy videos for quantum on youtube that go beyond the basic stuff.

Jchellis 1I

Is this worth points?

Jchellis 1I

How do we know the bond angles of bent structures?

Jchellis 1I

To check the symmetry of a Lewis Structure you can draw a line down the middle for a simple test

Jchellis 1I

It can be helpful conceptually if you know how to draw them but they are not required on tests.

Jchellis 1I

Is it possible to have a lone electron? or would that be a free radical?

Jchellis 1I

After you post you can also see the number of posts you have made next to your ID if you need to keep track.

Jchellis 1I

If you search the exact class name or add ucla to your search sometimes you can find ones made by other students in the class. Usually you can see the date when it was made too which is helpful.

Jchellis 1I

Is he going to emphasize the material after the midterm more or will it be more equal?

Jchellis 1I

Di you think naming will be emphasized much on the final as we just learned it in the last few days?

Jchellis 1I

After we finished basic high school review I found sites like Khan academy didn't have as many helpful review videos. I think your best bet would probably be to just search YouTube for other lectures.

Jchellis 1I

Lone pairs count just as much as an atom for a region of electron density

Jchellis 1I

If the molecule has no lone pairs then you can tell if it is polar based off of its electronegativity

Jchellis 1I

If we were not able to get ours back do you think the scores will be posted online in time for the final?

Jchellis 1I

He did say that there were only going to be 8 questions on the test though, so they must be multi-layered

Jchellis 1I

So the s block has one degeneracy, the p block has 3, the d block has 5 and the f block has 10

Jchellis 1I

I don't know how correct this advice I was given is, but I was told by another Chem14A TA that we don't really need to know the concepts behind why they are different in order to do the problems we are given in the Chem14 series.

Jchellis 1I

Kg is an SI unit so always convert to Kg

Jchellis 1I

How many degeneracies can there be?

Jchellis 1I

I have heard that the Khan Academy AP Chem review videos and problem sets are very helpful.

Jchellis 1I

The AV modules are a great tool though if you are looking for something like a bruincast to review the material.

Jchellis 1I

The workshops are also often on the Hill (in Covel), so they are super convenient if you live in the dorms.

Jchellis 1I

I also have this problem with the different v's that all have different meanings. Is there any way you write yours so you don't mess up?

Jchellis 1I

Will the constants be given as well?

Jchellis 1I

Its important to remember that we use kg instead of grams for SI units. I know I always forget!

Jchellis 1I

I am a very visual learner so watching videos online also really helps me. Also, with videos you can pause them and rewind, which you can't do in lecture, but its a little more engaging than the textbook.

Jchellis 1I

Thank you! It is so great to know that these notes will be helpful later.

Jchellis 1I

If you are a second year taking this class you probably already know people who took the class freshman year. It's not a bad idea to ask around to see if any of your friends are willing to help you out/tutor you because they see you all the time/can hold you accountable.

Jchellis 1I

How do we know that our TA will see our posts? Should we email them our alias?

Jchellis 1I

So when asked for atoms of a molecule we can multiply by the mols by Avogadro's number to get number of atoms, but I do not understand how to get molecules from mols?

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