CHEMISTRY COMMUNITY

Lizbeth Garcia 1F

You should be fine knowing the basic oxidation rules for Oxygen, Hydrogen and halogens. At least, I belive so since with these 3 you should be able to find the oxidation states of the other parts.

Lizbeth Garcia 1F

I would love to move into dorms this upcoming fall.

Lizbeth Garcia 1F

Its when you see three molecules collide in a reaction. It is not common compared to bimolecular and unimolecular.

Lizbeth Garcia 1F

I'm taking 14BL.

Lizbeth Garcia 1F

I believe he sent an email stating that unless he announced a difference it should be due end of week 10 aka sunday midnight.

Lizbeth Garcia 1F

Whenever I start feeling anxious, I take a break from whatever I am doing. The more anxious you are the less focused you become, so it's good to just put it aside for 10-15 minutes to relax and calm down for a bit.

Lizbeth Garcia 1F

I tend to take small breaks in between, or I switch from one class to another. I do this so that I am not getting tired of just one subject and burning out motivation to keep up with it.

Lizbeth Garcia 1F

I believe that it is a good idea to understand how the equations are derived to understand some of the concepts, especially since, if you do not know how to derive them, some problems that are not specific with certain variables can be a problem. However, I do not think we will be asked to derive eq...

Lizbeth Garcia 1F

Lauren Strickland 1B wrote:I really enjoyed Cat's Cradle and Six of Crows.

I second the Six of Crows! I really enjoyed that book.

Lizbeth Garcia 1F

Lots and lots of sleep and Netflix. I'm going to destress for the following quarter.

Lizbeth Garcia 1F

You can use it for Kelvin or the equilibrium constant, but the K for Kelvin is usually shown regular in the books while the K for the equilibrium constant is usually italicized.

Lizbeth Garcia 1F

If I'm not mistaken I believe it also has to deal with which side of the cell diagram you are putting them.

Lizbeth Garcia 1F

I agree with everyone else here. I break the reaction into half reactions and take into account their different charges.

Lizbeth Garcia 1F

Karen Elrayes 1L wrote:Why do we assume E* is 0?

The S.H.E is used to provide individual standard potentials, under standard condititons this electrodes standard potential (1 bar, etc) is 0.

Lizbeth Garcia 1F

I think that maybe just the basic rules about hydrogen and oxygen oxidation states should be known.

Lizbeth Garcia 1F

When do we have to include the inert metallic component of an electrode (platinum) as part of the cell diagram?

Lizbeth Garcia 1F

Perhaps it will be 30% of the questions like in the midterm.

Lizbeth Garcia 1F

I believe so. If I remember correctly, the delta S of a system is basically the same between reversible and irreversible.

Lizbeth Garcia 1F

They are solved the same way, but, if given the information of one and the answer desires the other, you just have to convert.

Lizbeth Garcia 1F

I barely tried banana bread not so long ago, but I'm also craving it!

Lizbeth Garcia 1F

I'm taking BL next quarter. I might take Chem 14C if theres still space as well.

Lizbeth Garcia 1F

I make a schedule for myself where I set alarms so, no matter what, I am forced to take breaks for myself.

Lizbeth Garcia 1F

Like many others here, I tend to make a small list of things I need to do. Even if the amount of work is a lot, I feel like making the list to break it into categories makes the abundance of work seem much less.

Lizbeth Garcia 1F

I plan on taking chemistry 14BL and C plus a GE requirement. This will more than likely be writing.

Lizbeth Garcia 1F

I would like to add that when molecules can move around more they can take more positions which is why molecules that are less rigid tend to have more entropy.

Lizbeth Garcia 1F

I just finish watching the Chilling Adventures of Sabrina. It was really good, in my opinion.

Lizbeth Garcia 1F

I believe q can also be used for enthalpy if it is qp or heat absorbed/released at constant pressure.

Lizbeth Garcia 1F

This really means and helps me a lot, thank you so much.

Lizbeth Garcia 1F

This occurs when delta U is 0. Because delta U= q+w, in order for it to be zero q=-w

Lizbeth Garcia 1F

I believe that q=mCdeltaT is the specific heat capacity (the amount of heat needed to raise the temperature of 1 gram of 1 substance by 1C) while q=CdeltaT is the regular heat capacity. There is also q=nCdeltaT which is the molar heat capacity.

Lizbeth Garcia 1F

You can try Sweet home if you haven't yet. I thought it was pretty good.

Lizbeth Garcia 1F

Thank you so much for this. I know I made a few mistakes but, hopefully, I can get an okay grade. Everyone put in the effort and so did I. I'm proud of us all.

Lizbeth Garcia 1F

Kc (and Kp which is also used) represent a more specific form of K where you use concentrations.

Lizbeth Garcia 1F

I plan to take 14C as a sophomore.

Lizbeth Garcia 1F

Since Hess's law is based on the fact that enthalpy is a state function, would we be able to use a similar method for other state functions as well? If needed.

Lizbeth Garcia 1F

I plan on catching up on my other classes after a well deserved break.

Lizbeth Garcia 1F

It would depend on the acidity/basicity of the ions that are within said salt. If they are, for example, cations of weak bases, they are expected to form acidic solutions.

Lizbeth Garcia 1F

Does anyone recommend reading the textbook for midterm prep? I would mostly recommend looking through the problems. However, if you are a little lost on something, you can try reading the book to get a better understanding. Especially since the book has examples with answers that take you through e...

Lizbeth Garcia 1F

I would believe that perhaps there are fewer questions than last quarter because of the amount points we are getting for each midterm this quarter. However, I am not sure.

Lizbeth Garcia 1F

They would be equal because the problem claims the water is neutral. When water is neutral [H30+]=[OH-].

Lizbeth Garcia 1F

I tend to mostly look at the book, but I would suggest going to review sessions.

Lizbeth Garcia 1F

Like everyone has stated, it is because H20 is the solvent and thus in excess. This means that it will be on both sides of the reaction resulting in it canceling out during the calculations. However, water is not always left out only when it is the solvent.

Lizbeth Garcia 1F

I tend to do circuits working on separate muscles depending on the day.

Lizbeth Garcia 1F

As far as I know, the K changes only when the temperature changes. As for the initial concentration, those are not always the equilibrium concentrations so, if I understand the question correctly, the change in concentrations simply leads to the concentrations that will give you K.

Lizbeth Garcia 1F

Maybe it will be like last quarter, where, during one of his lectures, he'll inform us about where the cutoff is.

Lizbeth Garcia 1F

I feel like having a schedule to stick to really kept me motivated. Even when I just wanted to laze around, an alarm would blare that would get me to work.

Lizbeth Garcia 1F

What does Michael Lithium say when he loses an electron. Helium Helium

Lizbeth Garcia 1F

Gabe_Ek 1G wrote:
OmarArafat_2K wrote:Only include H2O in the ice table if it is aqueous and gaseous, never a liquid or a solid. Ensure that you know which phase it is in always.

Is aqueous not the same as a liquid or am I getting this wrong?

I believe aqueous means that the material was placed within water which acts as a solvent.

Lizbeth Garcia 1F

I love telling chemistry jokes periodically.

Lizbeth Garcia 1F

Exercising my mind and body like how Lavelle recommends. :)

Lizbeth Garcia 1F

Hi! I've found that my biggest problem with studying is I never spend enough time on the stuff I'm shaky on. I like going through concepts I know how to do, just to confirm I do, but it ends up taking way too much time. While it can be daunting to do practice problems on concepts you don't like/fin...

Lizbeth Garcia 1F

If you need help with the math I highly recommend it. However, they are optional.

Lizbeth Garcia 1F

Memorizing the strong acids is a good help. Also, knowing that more oxygens usually mean stronger acids as well as higher electronegativity. There's also the idea that the easier it is to break the bond ,A-H, the stronger the acid is.

Lizbeth Garcia 1F

The Bronsted definition uses the donation and acceptance of protons while lewis uses the donation and acceptance of electron pairs

Lizbeth Garcia 1F

I agree with everyone else. I think its 50% total to pass.

Lizbeth Garcia 1F

Thank you, Dr. Lavelle, for increasing my interest in chemistry. Your explanations were great.

Lizbeth Garcia 1F

I'm planning to spend more time with my family.

Lizbeth Garcia 1F

I'm planning to go to the step-up sessions and reviews lavelle set up. Also, very important, the book problems .

Lizbeth Garcia 1F

Thank you so much! These videos are really great

Lizbeth Garcia 1F

I will mostly work on the textbook problems. I'm also reviewing things that I need memorized for the test and I'm planning to go to discussion sections week 10

Lizbeth Garcia 1F

Thank you so much for this!!! I'm going to start looking at their videos.

Lizbeth Garcia 1F

I believe it is similar, just, maybe more questions since they are giving us more time to complete it.

Lizbeth Garcia 1F

Lone pairs take up more space because of their repulsion so, yes, they are important for shape.

Lizbeth Garcia 1F

I remember doing questions with my TA and he explained that the type of bonds does not affect the shape. Just the amount of bonds and lone pairs.

Lizbeth Garcia 1F

I feel like I have room for improvement, but overall I feel somewhat calm. Of course, I'm still going to study like crazy.

Lizbeth Garcia 1F

I would have to go with shutting off the reactor.

Lizbeth Garcia 1F

I'm going to start studying tomorrow since I also need to prepare for my other classes. Like the comments above, I find the book problems really helpful and will go over them.

Lizbeth Garcia 1F

Aliya 2J wrote:I think I saw another post saying they'll try to get them to us a week later but I'm not sure.

Yeah I saw another post as well. Since there have not been any reported errors that need to be rechecked, I believe the grades will be out faster than last time.

Lizbeth Garcia 1F

Here's the list of intermolecular forces in the order of increasing strength (from weakest to strongest): - LDF (induced dipole-induced dipole) - dipole-induced dipole - dipole-dipole - ion-dipole - hydrogen bonding - ion-ion I wasn't sure if hydrogen bonding or ion-dipole was stronger, thank you f...

Lizbeth Garcia 1F

I believe it is cumulative. If I remember correctly, he said that during his discussions he will go over missed questions of midterm 1 and 2 for the final.

Lizbeth Garcia 1F

Same here, but we have to keep our chins up and work to do better on the next one

Lizbeth Garcia 1F

I think they do have specific names. If you want to know how they look, the book has pictures of them, but we do not need to actually learn their names.

Lizbeth Garcia 1F

Thank you so much for this bit of information! It helped clear things up

Lizbeth Garcia 1F

I'm worried about my grades as well! Seeing all the people that relate really does help calm my nerves.

Lizbeth Garcia 1F

Delocalization occurs when a pair of shared electrons cannot be associated with just one pair of atoms. The book gives the example of nitrate ions with two single bonds and a double bond. The one double bond can be drawn between any of the pairs of atoms, depicting how the shared electrons cannot be...

Lizbeth Garcia 1F

Yes, the VSEPR model helps determine the shape and structure of a molecule which then helps determine polarity.

Lizbeth Garcia 1F

Nitrogen cannot gave an expanded octet.

Lizbeth Garcia 1F

It is not mandatory for grading but it is really useful for going over the material. If anything, just go to step-up sessions to make up for it.

Lizbeth Garcia 1F

Thank you so much for this!

Lizbeth Garcia 1F

I tend to listen to some classical music and drink tea to calm my jitters while studying. Before taking tests, I tend to do breathing excercises.

Lizbeth Garcia 1F

I get really anxious before tests to the point where I'm shaking. Sometimes breathing exercises or even some light meditation before tests help me a lot.

Lizbeth Garcia 1F

I try to read the book on my free time and take extra notes on anything I might have found confusing during the lectures. During the weekend, I go over my notes to make sure that important concepts stick. I also work on the problems from the textbook and review the solutions to the sapling problems.

Lizbeth Garcia 1F

To try and recommend shows with scientific themes, Dr. Stone is a great show involving someone trying to rebuild society with science. There are numerous occasions in the show where the main character uses accurate chemistry in order to accomplish this. I highly recommend this show. I agree with th...

Lizbeth Garcia 1F

I thought I was the only one with this question. Thank you!

Lizbeth Garcia 1F

If I remember correctly, the n=4 only comes before 3d for the two elements under the s-block. From there it goes back to n=3 including the 4s that were previously used. However, like how the previous posts says, the n states how many subshells there are.

Lizbeth Garcia 1F

I slapped my neon the joke above me

Lizbeth Garcia 1F

I would also like to know. My guess is only the final will be cumulative, but who knows.

Lizbeth Garcia 1F

Stephanie Grigorian 2C wrote:Are we able to use more scratch paper than just the backs of the periodic table and constants worksheet for the midterm?

I believe its been said that you can.

Lizbeth Garcia 1F

If the problem indicates that the kinetic energy of the electron is 0, then the energy you are finding would be the threshold energy or work function. In other words, you are finding threshold energy if you are just calculating the minimum energy required to eject the electron (no excess energy). H...

Lizbeth Garcia 1F

I agree with everyone else, use the one that lavelle will provide on the equation sheet.

Lizbeth Garcia 1F

I am doing the modules and the textbook problems. When doing the textbook problems, I am paying close attention to things that confuse me and going over them.

Lizbeth Garcia 1F

The De Broglie equation and the speed of light equation may both have v but one signifies frequency and the other signifies velocity which becomes momentum when multiplied with the mass.

Lizbeth Garcia 1F

It is only for wave models. The amplitude signifies the height of the wave. This determines the intensity of said wave which can be translated as brightness.

Lizbeth Garcia 1F

Thank you so much this will help a lot!!

Lizbeth Garcia 1F

I like to listen to music/play music especially when I'm trying to clear my mind or get motivation to do work.

Lizbeth Garcia 1F

I believe you just need to be able to use the equations they give you in context with the questions they ask. As long as you know what they are used for I believe you should be fine. Also the homework problems and readings would be good to look over.

Lizbeth Garcia 1F

I would be interested in being apart of this as well.

Lizbeth Garcia 1F

Thank you so much! The MCAT makes me terrified (pretty sure i'm not the only one), but this sure does give me reassurance.

Lizbeth Garcia 1F

I heard Oxygen and Magnesium were going out. OMg

Lizbeth Garcia 1F

Is there ever a situation where the empirical formula would be used over the molecular formula? No. The empirical formula only formulates the ratio between the different elements in a way it is just a step to finding the molecular formula. However, they can be the same but your main focus, I believ...

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