CHEMISTRY COMMUNITY

Sam_Marasigan_3D

Hi. Is the 5% rule similar to when were calculating for percent dissociation?

Sam_Marasigan_3D

I've been listening to a lot of HONNE, Bruno Major, Before You Exit, and 92914 lately :)

Sam_Marasigan_3D

You're a life saver! That's so nice of you. Thank you!

Sam_Marasigan_3D

Yah. I agree with everyone. Sadly, I don't think there is an online test bank.

However, I think attending UA Sessions would be helpful. Some UAs (occasionally) share past midterm problems.

Sam_Marasigan_3D

I think attending more than one session a week can truly help you practice and hone down your problem solving skills. I personally find the workshops really helpful :)

Sam_Marasigan_3D

Yes. I agree with everyone, I think the testing format will be the same. Also, I'm pretty sure Dr. Lavelle will inform us about the exam procedures days before we take it.

Sam_Marasigan_3D

Ka = Acidity constant
Kb = Basicity constant

We use them when we're dealing with weak acids and bases.

Sam_Marasigan_3D

I space out my studying throughout the week. This method often leaves me feeling less stressed and motivates me to keep going :)

Sam_Marasigan_3D

Jason_Glass_2L wrote: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.

So, midterms will be held during our lecture times?

Sam_Marasigan_3D

I agree with everyone. I think UA Workshops are a life saver! They provide you with a lot of practice questions including some past midterm questions as well. Their very accommodating and can easily help you with any questions you may have.

Sam_Marasigan_3D

Yes, you're correct! Dr. Lavelle mentioned in his discussion section that it was a typo :)

Sam_Marasigan_3D

I believe our constants & equation sheet for Chem 14B is a bit different from Chem14A.

Sam_Marasigan_3D

After taking Chem 14a, I realized that I didn't fully take advantage of the extra help that was available--outside of lecture. So this quarter I'm trying my best to attend as many sessions as possible. Me too! I only began to go to them the week before the final and am now regretting not fully util...

Sam_Marasigan_3D

Here's the link of the exam schedule: https://lavelle.chem.ucla.edu/wp-conten ... hedule.pdf

Sam_Marasigan_3D

I love romcoms a lot! If you do too, I recommend "While you were sleeping" and "Notting Hill"

Sam_Marasigan_3D

For the past few days, I've been watching a lot of "the good doctor". It's actually pretty interesting. I highly recommend it :)

Sam_Marasigan_3D

I believe that we omit H2O in the ICE table due to its liquid state. The concentration does not change.

Sam_Marasigan_3D

I believe K is just the equilibrium constant. We differentiate it by using Kc or Kp.

Sam_Marasigan_3D

Pure substance is a homogenous mixture. It is made up of one type of property.

Sam_Marasigan_3D

I agree with everyone. I think K is just a constant and you can differentiate it by using Kc or Kp.
Kp = gas or atmospheric pressure
Kc = equilibrium concentrations (molarity)

Sam_Marasigan_3D

Don't worry, the first sapling assignment is due midnight Sunday Week 2.
You can also access Sapling learning through the 14 day free trial and enter your code once you receive it.

Sam_Marasigan_3D

I think so! Chem14A gave us the foundation of what we’ll learn more in Chem14B ツ

Sam_Marasigan_3D

I tried logging back in and it worked!

Sam_Marasigan_3D

Protonated or protonation is basically adding a proton to an atom.
An alkaline solution are basic solutions. (pH greater than 7)

Sam_Marasigan_3D

Chem_Mod wrote:Step-up sessions, Workshops, and Discussion Sections have covered recent material each week throughout the quarter.

Since it is week 10 they will mainly cover acids and bases.

Oh. I was wondering the same thing. Thank you so much!

Sam_Marasigan_3D

Thank you so much (̶◉͛‿◉̶)

Sam_Marasigan_3D

You can use either one. However, since Dr. Lavelle emphasized dropping the -ide and adding -o, I would use this process instead.

Sam_Marasigan_3D

Myoglobin is basically a monomeric heme protein established in muscle tissue. Hemoglobin is responsible for binding oxygen and transporting it throughout our body.

Sam_Marasigan_3D

I agree with everyone! You can use either one. However, Dr. Lavelle specifically emphasized dropping the -ide and adding -o.

Sam_Marasigan_3D

Lewis acid -> electron acceptor
Lewis base -> electron donor

Bronsted acid -> proton donor
Bronsted base -> proton acceptor

Sam_Marasigan_3D

I was wondering the same thing. I think Dr. Lavelle will let us know in a couple of days or you can try to ask your TA about it.

Sam_Marasigan_3D

About the discussion section, I think you should email your TA just in case :)

Sam_Marasigan_3D

almost_ethan wrote:Does anyone know when we should be receiving our grades for midterm 2?

I don't think there was a specific date mentioned. However, you can try to ask your TA for an update. I think Dr. Lavelle will email us once the grades are out.

Sam_Marasigan_3D

I recently discovered this app called "flora". The app basically helps you to stay away from your phone and focus on your work. This truly helped me to be more productive.

Sam_Marasigan_3D

I think Dr. Lavelle will email us once the grades are out. But, asking your TA is not a bad idea :)

Sam_Marasigan_3D

I agree with everyone. Ionic bonds are typically stronger, thus it requires a higher boiling point.

Sam_Marasigan_3D

I try to avoid reviewing the content an hour before the exam. Last minute cramming often just freaks me out. So, prior to the test, I tend to just calm myself down. Also, don't spend too much time on a specific question. Move on and come back to it later.

Sam_Marasigan_3D

I agree with everyone. Midterm 2 will cover topics after midterm 1. So, equations such as Schrodinger's, Heisenberg's, etc.. are most likely not on the exam. I think Midterm 2 will focus on Quantum numbers and onwards (Electron Configuration, Lewis Structures, etc.)

Sam_Marasigan_3D

I agree with everyone. I don't think there is an exception.

Sam_Marasigan_3D

Can Yilgor 1D wrote:Breaking Bad and Black Mirror are among my favorites. I started watching Grey's Anatomy, but I am not sure if I will be able to finish all 16 seasons.

Me too! I just started watching Grey's Anatomy last week. So far, it's pretty good.

Sam_Marasigan_3D

Yah, I agree with Keeryth. I think going to either step-up or workshop session would be helpful before the midterm.

Sam_Marasigan_3D

Delta positive donates electrons and delta negative accepts electrons.

Sam_Marasigan_3D

A coordinate covalent bond forms when one atom shares an electron pair with another atom. In polar covalent bond, electrons are not equally shared and electronegativity values (to a small degree) are different.

Sam_Marasigan_3D

Some factors that can determine bond length: atomic radius, bond strength, and bond order.

Sam_Marasigan_3D

A bond formed between a Lewis base and a Lewis acid is a coordinate covalent bond.

Sam_Marasigan_3D

So far, things have been great! I surprisingly enjoy learning from home.

Sam_Marasigan_3D

I agree with everyone! You can place them on any side.

Sam_Marasigan_3D

Yah. I think it was a mistake. I was a bit confused on that too.

Sam_Marasigan_3D

Yah. I remember Dr. Lavelle telling us not to worry about the f orbitals.

Sam_Marasigan_3D

I agree with everyone. I use the De Broglie wavelength equation when I am dealing with particles (mass of particle & velocity).

Sam_Marasigan_3D

Madeline Ogden 1D wrote:I'm pretty sure you can use whichever one you like and that it just depends on the information that you're given in the problem. Hope this helps!

I agree. It just depends on what the question asks and the given information.

Sam_Marasigan_3D

Oh that makes sense. Thank you @Jiwon_Chae_3J @jadensteplight_3F @SabineSalvucci1C

Sam_Marasigan_3D

I agree with everyone! To make an octet you must have 8 electrons in the valence shell. Hydrogen has 1 valence e-, Helium has 2 valence e-, Lithium has 1 valence e-, and Beryllium has 2 valence e-. It is not enough to make an octet :)

Sam_Marasigan_3D

I love to watch movies, cook, and listen to podcasts :>

Sam_Marasigan_3D

SLai_1I wrote:I think everyone will finish by tonight, so hopefully soon. I read that someone mentioned something about partial credit. How would that work?

Yah. I was wondering the same thing. Does anyone know?

Sam_Marasigan_3D

I would strongly suggest reviewing the textbook outline problems, they facilitate how to approach a problem. Theres answer key for the textbook problems so that you could see how they work out the answer if you're unsure of how to approach a problem; Hope this helped :) Hi! I agree. This is an effe...

Sam_Marasigan_3D

You use the de Broglie wave equation when the problem involves mass (m) and/or velocity (v).

Sam_Marasigan_3D

Testing yourself frequently on the concepts is a great strategy to use!

Sam_Marasigan_3D

According to Dr. Lavelle, Quantum numbers and orbitals will not be on the 1st midterm.

Sam_Marasigan_3D

I test myself frequently. Whether that's lecture concepts or giving myself a set of problems to do, testing oneself can be a good strategy to use.

Sam_Marasigan_3D

Thousandth of a mole = mmol

Sam_Marasigan_3D

The intensity of light is basically the number of photons falling on a certain area.

Sam_Marasigan_3D

I agree with everyone! Amplitude increases = an increase to the number of photons.

Sam_Marasigan_3D

I agree with everyone! There isn't really one way of balancing an equation. However, in most chemical equations, I tend to leave the Oxygen atoms and/or Hydrogen atoms at the very last. I balance the other molecules first.

Sam_Marasigan_3D

Hello! In my opinion, it is worth it! I've never lost a page of work ever since I switched to digital note taking, which is incredible. Also, viewing your notes will be a lot more convenient. I use both Notability and Notion to organize my lecture notes and assignments.

Sam_Marasigan_3D

A black body absorbs all energy/radiation (light) that falls on it.

Sam_Marasigan_3D

Dr. Lavelle informed us that it is alright to leave your answers in meters. However, if the question specifically asks for nanometers, then convert it :)

Sam_Marasigan_3D

I agree with everyone! The intro definitely helps me get situated.

Sam_Marasigan_3D

Yes. By using the dilution equation, you can solve for any variable the question is asking for (whether that's initial molarity, initial volume, final molarity, or final volume).

Sam_Marasigan_3D

I agree with Colin. Back in my AP Chem class, I almost never encountered a question that contained Fahrenheit as its temperature. It's always either Kelvin or Celsius.

Sam_Marasigan_3D

I agree with Hannah. Using the periodic table that Dr. Lavelle provided us would be a safe bet. Also, when calculating molar mass, I think it would be best to include most of the element's decimal places. By doing so, you'll get more accurate results.

Sam_Marasigan_3D

Hi! like what Madilyn said, there isn't really a specific order that you must follow in order to balance an equation. However, a friend told me once, that in most chemical equations, it's ideal to leave the Oxygen atoms and/or Hydrogen atoms at the very last. Try to balance the other molecules first.

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