CHEMISTRY COMMUNITY

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Do any of y'all have any really good study guides that you guys are willing to share?

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I feel so unmotivated this quarter to be honest. I feel like I have no idea what I'm doing, but honestly I just started working out and it's a nice way to release or go running or honestly just pick up a hobby, just don't let it stop you from doing your work like me. :((

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I'm such a sweets person and I hate it because it takes so much self-discipline to restrain from eating whatever I want! But summer is around the corner and feeling good is one of my main goals this summer and it unfortunately starts now.

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Do you any of you guys know where to find any last minute extra help before the final this Sunday?

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Before college I had never really taken a real chemistry class, and Lavelle you were my first real chemistry teacher. Although you do not offer the whole 14 series, I really wanted to appreciate you and showing me what a real chemistry class is like. It has been rough and difficult to pick up chemis...

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is there any chemistry that is connected with making cake pops and can someone possibly explain that? maybe to improve how one can make them at home?

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Is Wanda Vision that good? I LOVE MARVEL so I've been debating on seeing it, but everyone says its so GOODD. Please let me know if it's worth skipping studying time LOL

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I make bad Chemistry jokes because all of the good ones ARGON (Ar)

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I watched a really helpful YouTube video on it, https://www.youtube.com/watch?v=FP-VYfTYi8Y&t=685s

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How many questions over this topic do you think will be on the final?

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Does any one have any good practice problems or YouTube videos for this topic to study for the final?

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is there a good YouTube video for finding out the ones we are supposed to know?

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Other than PLFs are there any good tutoring sessions or people who offer services?

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I am taking 14B and I am still really scared to keep going into chemistry because I still do not know how to study for chemistry and not having developed that ability since high school.

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Also, are there certain videos that help explain the chemistry behind cooking different foods?

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What in chemistry makes flavors in food taste different other than heat?

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They are usually multiple choice and tend to go by the book more as a resource!

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Thank you so much for this! I think a lot of things that we might have not seen as normal are now very normalized and I feel more secure as a pre-med student :)

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Also, do you guys have any study groups who hold zooms before the test to review?

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How did you guys study and what really helped versus what really did not help y'all?

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PLF sessions are super helpful in the sense that they are like tutoring but way better! They give you the opportunity to explore the topic with your peers.

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does Lavelle speak over this? by any chance specifically in his lectures?

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Is there a certain chart though that maybe could be found online or through Lavelle's lectures?

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I might have missed it from Lavelle's lectures but are there other properties that I should know of?

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Here is a YouTube video that really helped me understand these concepts. https://www.youtube.com/watch?v=0cUK4jcAEaU

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Just for future tests make sure to go to chrome or safari and enter the test then access the lockdown browser through the regular browser so you don't waste time trying to access the test though the lockdown browser

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x is insignificant when you get a percent ionization less than 5% and when k is less than 1.0 x 10^-4

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Just as previous replies have stated you would only include H2O in the reaction is it were a gas, not a liquid since liquids are never included.

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Here's a brief YouTube video that helped me distinguish the difference between the both and other terms we need to know. https://www.youtube.com/watch?v=IQ6gHQAg_Nk

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Does anyone know of a good YouTube video that explains percent ionization? I sort of understood how Lavelle explained it but I need more examples.

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is this why he referenced it to money when he stated if someone has 10,000 dollars and gives 10 dollars to someone, they basically have 10,000 dollars? Is that what he signified, by basically rounding if the E is less than a certain value?

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Just like the previous response, I have trouble telling between acidic and basic salts, is there a sort of mechanism of remembering the difference or the properties of what makes them more basic, acidic or neutral?

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For one problem on the week 1 homework due tonight we have a problem that utilizes the units of bars so in order to solve is it mandatory to covert it to atm or is it just recommended?

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just so I can reference it for later what are non-ideal gases and what are they utilized for?

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so let's say there is a problem where they provide the mols and they are in a certain number of L in a container you would have to find the concentration with is basically mol/L in order to then proceed with the problem?

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One good video that expressed an example of reversing a reaction was on this link https://www.youtube.com/watch?v=aJ0KNQ5-KaI

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just like how you reversed the reaction, you would have k inversed so it would be 1/K

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I utilized this YouTube video to help me solve and figure out ice tables https://www.youtube.com/watch?v=54n1XppP-lA

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just clarifying, but we would only need to square or cube K when the coefficients/ moles of the reaction are being multiplied by 2 or 3 respectively?

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In order to figure out where the coefficients would go I saw this YouTube video which should help. He clearly explains the whole process : https://www.youtube.com/watch?v=aJ0KNQ5-KaI

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Just as stated from before, K can only be altered by temperature

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Do any of you have any recommendations on a good YouTube video for explaining Ice tables?

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can you catch up on chemistry community posts? for example lets say you have 10 the whole quarter and decide to catch up on the last week is it still valid?

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It applies I believe to the points of the assignments of the overall class in order to get a passing grade.

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Does the saliva in mosquitos naturally release histamine or it normally found in their saliva to begin with?

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I also check on CCLE under the tab, Grades, it should be very easy to find.

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Lavelle this quarter especially with a pandemic and personally not having any experience with chemistry at all coming out of high school provided lots of resources to help learn and digest the material which I appreciated a lot. Also, YouTube videos are very essential and can teach you a lot of the ...

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Usually I would think about the hydrogens attached or the OH's attached to determine whether it is more on the acidic or basic side, but I do have trouble determining whether it would be a strong or weak acid or base.

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is finding the conjugate acids and bases different for each type of acid and base based on whether they are lewis or not?

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I know there is a set of equations to find POH and PH but are there other ways of figuring it out for visual learners?

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I utilized this video to help me gain a better understanding. https://www.youtube.com/watch?v=IQ6gHQAg_Nk

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I'm planning to catch up on as many TV shows as I can since I can never watch them during the quarter and work to get money and be financially stable temporarily.

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Yes I do believe that adds help since a lot of people don't know about the resource and it is very easy to get in as long as you meet the basic requirements of being a minority and earning a certain amount for AAP.

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Honestly, I had no experience in chemistry since high school ended and even then the education in high school chemistry was not that great so providing many tutoring hours and step up sessions was very helpful. I am very grateful to have a lot more background and introduction to chemistry now becaus...

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Why is it that only some elements on the periodic table such as Sulfur have an expanded octet and I understand that they can have multiple bonds, but how and why are they the only ones??

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Start in advance! I cannot say how many times I did not give myself enough time to study a whole quarter's worth of material and also do not forget to take care of yourself is is very necessary in order to maintain your body and your brain in a good state to take the final.

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Why does hamburger yield lower energy than steak?

Because it's in the ground state.

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If H2O is the formula for water, what is the formula for ice?

H2O Cubed.

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Why was the move oxygen was excited when he walked out of the singles bar?

He got Avogadro's number!!

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What did the sign to say when he found two isotopes of helium?

HeHe

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Did you hear oxygen went on a date with potassium?

It went OK.

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What do you do with the sick chemist?

If you can't Helium, you can't curium, then you might as well barium.

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Have you heard the one about a chemist who was reading a book about Helium??

He just couldn't put it down.

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This story is honestly very motivating. I feel as if certain classes make pre-meds feel as if it is not doable and it does get very scary to keep heading into a direction you are not entirely sure about. As a first generation Latina I have had many doubts about the medical system as a whole and how ...

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If you need more help solving for these uncertainty questions this YouTube video really helped me get through these types of problems here is the link: https://www.youtube.com/watch?v=BNYz5EKXVeI

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I am going to try and catch up on some Netflix shows and go visit my family at their house. Also, I cannot wait to work over the winter break in order to accumulate some money for next quarter.

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I go through the lectures and sometimes I can't understand the topics and YouTube really helps me understands them since ai don't have time to go through all the Audio-Visual Topics. I understand what it is like to not have time and I have to stay up really late watching them but it's worth it since...

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If the electrons do not get excited or ejected do they ever get absorbed?

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Can some one explain to me how to utilize avagrado's number? Is it usually utilized as a conversion for photons are there other ways to use this number?

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Honestly I am confused about that too. I am not entirely sure. I also had trouble solving out problems that were about the photoelectric effect but I found a YouTube video that really helped me, here's the link: https://www.youtube.com/watch?v=-LECEvusk8E

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Usually Hyrdogen and Oxygen are left last but every problem is different! A video that helped me understand balancing equations and in which order was https://www.youtube.com/watch?v=e_C-V5vJv80

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How do I write out a proper equation? Where can I can the charge of an atom to combine them?

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How do I find the limiting reactant within an equation when it's not given?

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Here's also a YouTube that really helped me understand sig figs! It explains the rules with addition, subtraction, multiplication, and division. https://www.youtube.com/watch?v=BmeImtwhfj8

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Just making sure but let's say for example the sample mass is 110 plus or minus 10 would be an estimate? This is referencing problem 9 on the sampling hw.

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