## Search found 59 matches

Tue Jan 26, 2021 9:05 am
Forum: Administrative Questions and Class Announcements
Topic: Questions on Midterm 1
Replies: 3
Views: 18

### Re: Questions on Midterm 1

I'm not sure exactly how many questions will be on the test, but I heard that the format of the test will be similar to 14A, so I would think somewhere around 12 questions or so.
Tue Jan 26, 2021 8:59 am
Forum: Student Social/Study Group
Topic: Review Sessions
Replies: 6
Views: 29

### Re: Review Sessions

Aside from any scheduled review sessions you could probably reach out to your TA to schedule a time to meet if you have specific questions or topics to go over!
Tue Jan 26, 2021 8:58 am
Forum: Administrative Questions and Class Announcements
Topic: Late Homework Policy
Replies: 1
Views: 10

### Late Homework Policy

I may have missed it, but I didn't see anything regarding late assignments on the syllabus for 14B. Does anyone happen to know if partial credit is received for Sapling homework completed late?
Tue Jan 26, 2021 8:53 am
Forum: General Science Questions
Topic: Study Tips for midterm
Replies: 16
Views: 35

### Re: Study Tips for midterm

In my opinion and based on what I've heard from the TA's, going through and fully understanding the textbook problems is key to preparing for the midterm and final exams.
Sun Jan 17, 2021 7:56 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Sapling Week 1 #3
Replies: 9
Views: 45

### Re: Sapling Week 1 #3

I also did the whole quadratic formula without realizing I could use a square root! Good tip to be on the lookout for for next time though.
Sun Jan 17, 2021 7:00 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterms
Replies: 24
Views: 58

### Re: Midterms

I believe that midterms will be formatted similarly to Chem 14A, however, we will be taking them during lecture rather than discussion section.
Thu Dec 17, 2020 12:43 am
Forum: General Science Questions
Replies: 34
Views: 241

Just to clarify, does this mean that everyone who gets at least 50% of all points from the quarter will pass with at least a C-?
Thu Dec 17, 2020 12:38 am
Forum: General Science Questions
Replies: 32
Views: 351

I am still a little unclear on what would be the minimum needed to pass the class, but I asked my TA before the final if he know anything about what the grading scale would be like for this class and he said that the exact breakdown/cutoffs for grading was still undecided, and that it would be influ...
Wed Dec 16, 2020 2:19 pm
Forum: Student Social/Study Group
Topic: Anxiety
Replies: 42
Views: 240

### Re: Anxiety

I find that doing things like cleaning or exercising help me to relieve stress because I am allowing myself to take a break from academics but I still am able to feel like I am doing something productive.
Wed Dec 16, 2020 2:05 pm
Forum: Student Social/Study Group
Topic: Curve
Replies: 29
Views: 206

### Re: Curve

Someone mentioned above that you need at least 50% to get a C- in the class, and I know it says that on the syllabus, but does this mean that everyone who gets a grade above a 50% will definitely pass the class with a C-? Or does it just mean that students who score less than 50% will definitely not...
Wed Dec 16, 2020 11:18 am
Forum: Calculating the pH of Salt Solutions
Topic: Hard Water vs. Soft Water
Replies: 9
Views: 63

### Re: Hard Water vs. Soft Water

My understanding is that hard water is hard because it has a higher mineral content. I looked it up and discovered that water is considered hard if it has a pH of 8.5 or above, meaning that hard water is more alkaline. Soft water, then, is more acidic and has a lower mineral concentration.
Wed Dec 16, 2020 11:10 am
Forum: Student Social/Study Group
Topic: Plans for Relaxing After Finals
Replies: 98
Views: 457

### Re: Plans for Relaxing After Finals

Lillian wrote:I'm going to sleep until my organs fail, obviously.

This sounds absolutely ideal. I've also been baking ridiculous amounts of cookies to help deal with finals stress and I plan to keep it up over break.
Wed Dec 16, 2020 11:08 am
Forum: Student Social/Study Group
Topic: Curve
Replies: 29
Views: 206

### Re: Curve

It seems like the class average is pretty high so there probably won't be a curve, but the professor did say in an email that he will be giving everyone an additional 10 points on the final (capped at 180), and he mentioned in a post on Chem Community to expect more good news by the end of the week.
Wed Dec 16, 2020 11:04 am
Forum: *Titrations & Titration Calculations
Topic: Is this a 14B topic? [ENDORSED]
Replies: 8
Views: 78

### Re: Is this a 14B topic?[ENDORSED]

I believe Professor Lavelle said that we will do titrations in 14BL, but we will likely go over them in 14B as well.
Wed Dec 16, 2020 11:01 am
Forum: Determining Molecular Shape (VSEPR)
Topic: What are the bond angles for T shaped?
Replies: 17
Views: 118

### Re: What are the bond angles for T shaped?

T-shaped molecules occur when the central atom has three bonding pairs and two lone pairs, and the angles are slightly less than 90 degrees.
Wed Dec 16, 2020 10:57 am
Forum: Student Social/Study Group
Topic: Winter Break
Replies: 44
Views: 255

### Re: Winter Break

As somebody else mentioned above, while it is important to be prepared for 14B also remember to enjoy winter break and relax a little so we can all come back to 14B refreshed and rested. :) Congrats everyone for making it through the quarter!
Tue Dec 15, 2020 12:16 pm
Forum: Administrative Questions and Class Announcements
Topic: Saying Thank You to Dr. Lavelle
Replies: 337
Views: 139704

### Re: Saying Thank You to Dr. Lavelle

Professor Lavelle, This has been one of the few classes that I have taken at UCLA, even including in-person classes, that has provided the amount of support and extra time going over topics outside of class. All of the resources put in place to help us succeed, including the many review hours and TA...
Tue Dec 15, 2020 11:59 am
Forum: Student Social/Study Group
Topic: Staying Motivated
Replies: 20
Views: 124

### Staying Motivated

At the end of this quarter, more so than other quarters, I found myself struggling to stay motivated and focused on my classes. Especially for this class, with the lectures being prerecorded, I found that it was a little too easy to let myself fall behind. Does anyone have any advice or tips that ha...
Tue Dec 15, 2020 11:48 am
Forum: Identifying Acidic & Basic Salts
Topic: What is a Salt?
Replies: 9
Views: 68

### Re: What is a Salt?

My understanding of a salt is that it is formed through an acid-base reaction and is composed of an anion and a cation, with the cation often being a metal and the anion being a nonmetal.
Tue Dec 15, 2020 11:39 am
Forum: Student Social/Study Group
Topic: How are you?
Replies: 117
Views: 784

### Re: How are you?

While finals week is always stressful, it's been nice seeing Christmas lights go up, and wrapping presents and getting excited for the holidays has definitely relieved some of that typical finals week stress. I'm definitely excited for the end of the quarter and I hope everyone has a safe and relaxi...
Tue Dec 15, 2020 11:32 am
Forum: Student Social/Study Group
Topic: Changing Study Habits
Replies: 35
Views: 190

### Re: Changing Study Habits

I think that moving forward I will definitely need to work on more practice problems and more varied applications of different topics because I found myself getting overconfident and then being underprepared on the midterms and final exams when I would see a concept that I thought I understood being...
Tue Dec 15, 2020 11:04 am
Forum: Student Social/Study Group
Topic: Winter Break
Replies: 44
Views: 255

### Re: Winter Break

During the quarter I usually take pretty messy notes from lecture and the textbook, and over winter quarter I plan to rewrite my notes, or at least the essential concepts. This will help me stay refreshed on the material, and will also give me something to reference should I need to in 14B.
Tue Dec 15, 2020 1:10 am
Forum: Student Social/Study Group
Topic: Final Exam
Replies: 49
Views: 308

### Re: Final Exam

I also was super rushed towards the end of the exam. I was feeling good about the test overall, but after guessing on the last few questions, I'm definitely worries about my grade. I do feel a little better knowing that other people struggled with this!
Sun Dec 13, 2020 10:50 am
Forum: Lewis Acids & Bases
Topic: KA and pKA
Replies: 19
Views: 144

### Re: KA and pKA

I don't believe we will need to directly calculate Ka and pKa, but it would be best to know the relationships between the two, and understand how they relate to the strength/weakness of acids, as explained above.
Sat Dec 12, 2020 8:45 am
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: [OH-] and pOH difference
Replies: 9
Views: 54

### Re: [OH-] and pOH difference

My understanding is that pH refers to the concentration of H, or more specifically the concentration of H3O+, whereas pOH is the concentration of OH-. To calculate pH, use pH =-log [H3O+] and to calculate pOH, use pOH = -log [OH-]. To if given one and asked to calculate the other, you should be able...
Sat Dec 12, 2020 12:23 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Why is CO (carbon monoxide) monodentate?
Replies: 6
Views: 46

### Re: Why is CO (carbon monoxide) monodentate?

In my understanding, CO is a monodentate ligand because when one of the lone pairs becomes a bonding pair, it repels the other lone pair, which becomes too far away to create a second bond.
Fri Dec 11, 2020 8:27 pm
Forum: Coordinate Covalent Bonds
Topic: Definition
Replies: 4
Views: 35

### Re: Definition

The definition I have in my notes from lecture is that a ligand is any compound that interacts with a transition metal to form a coordination compound/transition metal complex. I'm not sure how this relates to the biological definition but I hope this helps!
Fri Dec 11, 2020 8:16 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Equilibrium constant
Replies: 5
Views: 24

### Re: Equilibrium constant

Just to clarify, will we be expected to calculate equilibrium constants or just have a basic understanding of them?
Fri Dec 11, 2020 7:36 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Chelates
Replies: 2
Views: 19

### Re: Chelates

The definition I have in my notes is that chelates are complexes containing ligands that form a ring of atoms, including the central atom. Monodentate ligands cannot be chelating ligands because it is necessary for the ligand to bond more than once in order to create this ring structure. Thus, only ...
Tue Dec 08, 2020 8:49 pm
Forum: Naming
Topic: What if I don't know?
Replies: 8
Views: 90

### Re: What if I don't know?

Just to clarify, are we meant to have the compounds on the chart memorized?
Sun Dec 06, 2020 10:03 pm
Forum: Student Social/Study Group
Topic: finals
Replies: 4
Views: 45

### Re: finals

I wish I had advice for how to keep from getting overwhelmed. As far as studying, I find that it works best for me to begin by reviewing material that I feel like I understand the least, and move into reviewing what I feel more confident about.
Fri Dec 04, 2020 4:33 pm
Forum: Administrative Questions and Class Announcements
Replies: 4
Views: 90

I may be wrong, but I believe that the exact cutoff or grade breakdown depends on how (or whether) the professor curves the grades at the end of the quarter, based on how most students did, which will likely depend on the final quite a bit.
Mon Nov 30, 2020 2:12 pm
Forum: Student Social/Study Group
Topic: Week 8/9 Thoughts/Worries
Replies: 66
Views: 484

### Re: Week 8/9 Thoughts/Worries

I find that its been hard to stay focused as the quarter is almost over. I also got a bit discouraged in this class because I did not do as well on the midterms as I had hoped or thought that I did. Regardless, I plan to study extensively for the final and hopefully end the glass with a good grade.
Mon Nov 30, 2020 2:07 pm
Forum: Student Social/Study Group
Topic: Final Exam Study Tips
Replies: 48
Views: 245

### Re: Final Exam Study Tips

Personally, when I need to cover a lot of information I like to break it up into chunks, or different sections. I find that this makes it a little easier and less overwhelming to tackle it all. I generally start by reviewing the material I feel the least confidant about and then progressing from the...
Mon Nov 30, 2020 1:44 pm
Forum: Student Social/Study Group
Topic: Final Exam Structure
Replies: 12
Views: 111

### Re: Final Exam Structure

I'm not sure how the specific structure will be for this class, but as someone else mentioned above, usually classes emphasize new material on the final but still include some older material to make sure that we retain information throughout the quarter.
Mon Nov 30, 2020 12:30 pm
Forum: Student Social/Study Group
Replies: 110
Views: 1174

A couple people have mentioned changing grades to P/NP, but I'm wondering if this will affect how this class counts towards major requirements, or qualifications/prerequisites for classes in the future.
Fri Nov 20, 2020 3:12 pm
Forum: Student Social/Study Group
Replies: 110
Views: 1174

I had gotten a little discouraged after the first midterm but I studied more and I feel a lot better after the second midterm this week. Hopefully we all did well and can finish out the quarter strong. Good luck everyone!
Fri Nov 20, 2020 3:10 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem 14B/BL
Replies: 3
Views: 49

### Re: Chem 14B/BL

Thank you guys for the advice!
Wed Nov 18, 2020 2:37 pm
Forum: Administrative Questions and Class Announcements
Topic: The Final
Replies: 1
Views: 43

### Re: The Final

It says on the syllabus that out final will be 1 hour and 30 minutes, so I'm curious whether it will need to be proctored in the same way as the midterms, and if there will be flexibility on when we can take it, based on our various schedules. I'm in lecture 3 and it also says on MyUCLA that the fin...
Tue Nov 17, 2020 4:55 pm
Forum: Dipole Moments
Topic: Dipole representation on midterm 2
Replies: 9
Views: 113

### Re: Dipole representation on midterm 2

My understanding of what was said in lecture is that the arrow will be pointing towards the more negative side. This is because the electrons are being pulled to this side, which is what gives that part of the structure a partial negative charge, due to the negative charge that electrons have.
Tue Nov 17, 2020 4:51 pm
Forum: Student Social/Study Group
Replies: 110
Views: 1174

Also, someone mentioned above that Lavelle is dropping 10 points from the first midterm to make it out of 100 rather than out of 110, does anyone have more information to confirm/deny this?
Tue Nov 17, 2020 4:49 pm
Forum: Student Social/Study Group
Replies: 110
Views: 1174

I am especially worried about my grade and the upcoming tests because I didn't do as well on the first midterm as I had hoped. Regardless of my knowledge of the material, I generally perform poorly on tests, especially when stressed, so I have been working on calming strategies and breathing techniq...
Sat Nov 14, 2020 5:21 pm
Forum: Administrative Questions and Class Announcements
Topic: Weekend Posts
Replies: 4
Views: 34

### Weekend Posts

This may be answered somewhere and I missed it, but do posts on the weekend count for points for the preceding week or the following week?
Sat Nov 14, 2020 5:19 pm
Forum: Administrative Questions and Class Announcements
Topic: Chem 14B/BL
Replies: 3
Views: 49

### Chem 14B/BL

I’m considering taking Chem 14B and Chem 14BL both next quarter and I’m wondering if anyone has any advice, whether this is cautioned against or if it should be totally fine. Let me know if you have any thoughts!
Tue Nov 10, 2020 3:09 pm
Forum: Administrative Questions and Class Announcements
Topic: missing discussion
Replies: 4
Views: 42

### Re: missing discussion

Attendance/participation is not factored into our grade, so the only issue with missing discussion section would be missing the information presented by the TA. My TA posts the slides on his CCLE site, so I haven't found this to be a problem.
Tue Nov 10, 2020 3:06 pm
Forum: Administrative Questions and Class Announcements
Topic: Extra Credit Opportunity?
Replies: 1
Views: 40

### Re: Extra Credit Opportunity?

I imagine if a large portion of the class was struggling than there might be extra credit offered, however, the average on the first midterm seems pretty high so I'm not sure that there will be. I haven't heard anything definite, this is just my best guess.
Thu Nov 05, 2020 2:12 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm Scores
Replies: 28
Views: 269

### Re: Midterm Scores

I think this was asked previously in the chain but will midterm grades be curved? Or will overall grades be curved at the end of the year?
Thu Nov 05, 2020 1:43 pm
Forum: General Science Questions
Replies: 30
Views: 344

I see that the grades are posted on CCLE, but will we be able to see which questions we got wrong so that we can know where we made mistakes?
Thu Nov 05, 2020 9:50 am
Forum: Student Social/Study Group
Topic: Midterm Partial Credit
Replies: 19
Views: 229

### Re: Midterm Partial Credit

I'm wondering whether only some questions have the potential for partial credit or if they all did, especially given that people got different versions of the exam.
Tue Oct 27, 2020 2:42 pm
Forum: *Shrodinger Equation
Topic: Particle in a Box
Replies: 5
Views: 101

### Re: Particle in a Box

I believe the professor mentioned the particle in a box model just very briefly, but said that we do not need to know/understand it for the midterm or this class.
Tue Oct 27, 2020 1:56 pm
Forum: Student Social/Study Group
Topic: Questions for Midterm 1
Replies: 5
Views: 75

### Re: Questions for Midterm 1

In the Midterm 1 Instructions that the professor emailed out it says there will be 12 questions and I believe they will all be multiple choice, covering both conceptual topics as well as calculations. Hope this helps!
Mon Oct 26, 2020 12:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Petition to Bring Music Back To Lectures [ENDORSED]
Replies: 34
Views: 541

### Re: Petition to Bring Music Back To Lectures[ENDORSED]

I'm so glad we were able to get the music back! The jams definitely enhance the whole chemistry experience.
Sun Oct 25, 2020 9:32 pm
Forum: Properties of Electrons
Topic: Sapling week 2,3,4 #19
Replies: 2
Views: 32

### Re: Sapling week 2,3,4 #19

I believe the questions may be shuffled, is the question #19 that you're seeing the one that asks: "What would the speed of each particle be if it had the same wavelength as a photon of violet light (wavelength=400.0 nm)?"
Sun Oct 25, 2020 7:54 pm
Forum: Properties of Light
Topic: Sapling problem
Replies: 6
Views: 84

### Re: Sapling problem

I am also struggling with this problem, specifically with finding the actual values for the wavelength range. I understand that the highest energy transition will be from n=6 to n=1 and that the lowest energy transition will be from n=5 to n=6, however, I believe I may be messing up in calculating t...
Fri Oct 23, 2020 6:14 pm
Forum: Administrative Questions and Class Announcements
Topic: Midterm length
Replies: 4
Views: 43

### Re: Midterm length

As some others have stated, I do believe the midterm will be multiple choice! I am not sure how many questions there will be, but it shouldn't be too long as my TA said that we should definitely have enough time to finish everything in the 50 minute discussion period.
Sun Oct 18, 2020 6:46 pm
Forum: Administrative Questions and Class Announcements
Topic: Tests
Replies: 6
Views: 67

### Tests

I'm not sure if this was already asked or answered, but to what extent will the tests (midterms, final) in this class be cumulative? Additionally, how will these tests be administered online? Will they be through Respondus or some other platform?
Fri Oct 09, 2020 11:09 pm
Forum: Limiting Reactant Calculations
Topic: Best way to find limiting reactant
Replies: 5
Views: 97

### Re: Best way to find limiting reactant

I'm not sure which of these methods is more efficient but I prefer to use the method Dr. Lavelle showed in his focus topic lecture, where you find the moles of each reactant and compare them to the stoichiometric coefficients, because this process is easier for me to wrap my head around than some of...
Fri Oct 09, 2020 11:04 pm
Forum: Student Social/Study Group
Topic: GroupMes for Chem 14A Fall 2020
Replies: 24
Views: 236

### Re: GroupMes for Chem 14A Fall 2020

Is there a GroupMe for Discussion 3J and if not would anyone be interested in joining if I created one?
Fri Oct 09, 2020 10:56 pm
Forum: Administrative Questions and Class Announcements
Topic: Petition to Bring Music Back To Lectures [ENDORSED]
Replies: 34
Views: 541

### Re: Petition to Bring Music Back To Lectures[ENDORSED]

I would also very much appreciate the return of the music before lectures. As someone else mentioned, sharing the track would also be appreciated so that we can listen to it individually, but there's something about vibing with Dr. Lavelle before each lecture that really makes learning chemistry so ...