CHEMISTRY COMMUNITY

Greetings Chem 14A students!

My name is Karen Leung, one of your UAs this quarter. I will be hosting workshops every Sunday 5-7pm this quarter, and I use worksheets I have made to facilitate my workshops. They will be posted on this SAME post here every week (I'll try to have them posted by Friday night, but Saturday by the latest). I created these worksheets as extra practice for every week's material learned. (They are made to imitate Dr. Lavelle's question styles to the best of my ability.) If you plan on attending my workshops, please bring this worksheet (either printed or available on a computer/tablet). You do not need to complete it, we will go over the problems together during the session.

Breakdown of my workshop:
-First review all course material learned in the previous week
-Do practice problems together from my worksheets
-Answer questions from lecture, homework, modules, etc. anything that anyone wants answered

The answers to the worksheets will be posted on this SAME post AFTER the session, but no work will be shown, so coming out to the session is necessary to understand the steps of getting to each solution. The worksheets for later weeks (Week 2,3,4..etc) will also be posted on THIS SAME post as well, so you will need to come back to this post every week for each week's worksheets.

Attached is the first worksheet of the quarter!

Where will these workshops be held please?

Oduwole 1H wrote:Where will these workshops be held please?

Covel 210 Sunday 5-7pm!

Are these questions representative of how Test 1 will be?

Do we have to sign up for your workshops or are students welcome to just show up?

Here is the answers for today's workshop.

Kaylee Sepulveda 3C wrote:Do we have to sign up for your workshops or are students welcome to just show up?

No sign ups needed! Just show up.

Alexis F 3L wrote:Are these questions representative of how Test 1 will be?

I wrote these questions based on my experience with Dr. Lavelle over the years and some questions were adapted from old exams. However, difficulty in exams vary from year to year.

Chem_Mod wrote:Here is the answers for today's workshop.

Thanks so much, this was super helpful!

Will we be doing these sorts of worksheets every week in your work shop?

Will you be posting the worksheets and their answer keys weekly?

Thank you so much for making these!

Bita Ghanei 1F wrote:Will you be posting the worksheets and their answer keys weekly?

Thank you so much for making these!

I'd also like to know if you're planning on posting the worksheets weekly! Also, is it possible that you might have (or develop) a group chat to continue posting these sheets?

Thank you so much, Is this just for every test or every workshop that you hold?

What was the scam for workshops that Dr. Lavelle mentioned in lecture? Something to do with asking for our phone numbers?

505106414 wrote:What was the scam for workshops that Dr. Lavelle mentioned in lecture? Something to do with asking for our phone numbers?

Yeah he mentioned it in my lecture which was at 2. He said in one of his earlier lectures there was a piece of paper going around to sign up for workshops. It asked for your name and number. One of the TA's saw it and told Dr. Lavelle and stopped it because he would never ask for our numbers.

Bita Ghanei 1F wrote:Will you be posting the worksheets and their answer keys weekly?

Thank you so much for making these!

She mentioned that she will be posting the worksheets and their answers on this post weekly.

nicole-4d wrote:

505106414 wrote:What was the scam for workshops that Dr. Lavelle mentioned in lecture? Something to do with asking for our phone numbers?

Yeah he mentioned it in my lecture which was at 2. He said in one of his earlier lectures there was a piece of paper going around to sign up for workshops. It asked for your name and number. One of the TA's saw it and told Dr. Lavelle and stopped it because he would never ask for our numbers.

Hello, I'm not sure what that was about. I will never ask for your contact information either, you guys can find my email on Dr. Lavelle's UA page, if you need to personally email me for anything. Otherwise, worksheets will be posted here every week.

-K

Here is worksheet for tomorrow's session! We will cover basics on the quantum world.

Is the workshop the "Step-Up" type?

If we need to leave early from a workshop would that be okay? During lecture, Dr. Lavelle said that the Peer Learning sections were designed to be flexible so we can come in and leave at any time, but I don't know if this applied to workshops as well.

These worksheets are really helpful, thank you so much for providing us with this resource!

In case we can't attend the sessions, is there a way to see how the answers were gotten so we can learn the processes involved?

great tool and resource to help review and further cement the fundamentals of each topic covered in class !

I went to your workshop last Sunday, and I found it extremely useful. Thank you for all the help. I will see you next week!

Here is the key for worksheet on the quantum world.

KTran 1I wrote:If we need to leave early from a workshop would that be okay? During lecture, Dr. Lavelle said that the Peer Learning sections were designed to be flexible so we can come in and leave at any time, but I don't know if this applied to workshops as well.

Yes, no attendance is taken and attending my workshop is entirely optional, so you may come and leave at any time you like.

Madeline Phan 4H wrote:Is the workshop the "Step-Up" type?

Workshops are separate from step-up sessions. But I try to end the workshop at around 1.5hr mark, so that I have 30mins for individual questions.

Chem_Mod wrote:Greetings Chem 14A students!

My name is Karen Leung, one of your UAs this quarter. I will be hosting workshops every Sunday 5-7pm this quarter, and I use worksheets I have made to facilitate my workshops. They will be posted on this SAME post here every week (I'll try to have them posted by Friday night, but Saturday by the latest). I created these worksheets as extra practice for every week's material learned. (They are made to imitate Dr. Lavelle's question styles to the best of my ability.) If you plan on attending my workshops, please bring this worksheet (either printed or available on a computer/tablet). You do not need to complete it, we will go over the problems together during the session.

Breakdown of my workshop:
-First review all course material learned in the previous week
-Do practice problems together from my worksheets
-Answer questions from lecture, homework, modules, etc. anything that anyone wants answered

The answers to the worksheets will be posted on this SAME post AFTER the session, but no work will be shown, so coming out to the session is necessary to understand the steps of getting to each solution. The worksheets for later weeks (Week 2,3,4..etc) will also be posted on THIS SAME post as well, so you will need to come back to this post every week for each week's worksheets.

Attached is the first worksheet of the quarter!

thank you so much!

Worksheet for 10/20

Will the answers be posted for those of us who can’t attend the sessions to make sure we get the correct answer?

Answers for worksheet 3.

Does anyone know if any other UAs post their worksheets on Chemistry Community?? These worksheets are so helpful especially for me whose high school chemistry background is essentially nonexistent.
Thank you so much Karen for posting these!

Jasmine 3L wrote:Does anyone know if any other UAs post their worksheets on Chemistry Community?? These worksheets are so helpful especially for me whose high school chemistry background is essentially nonexistent.
Thank you so much Karen for posting these!

Yeah, I found another UA who posts helpful worksheets too with the answers. You can search for her name and she should come up. Her name is Sonia and here are some of the ones I found from her.

Here is the worksheet for tomorrow's workshop. We will go over electron configurations, periodic table trends, and lewis structures.

Thank you!

The full key to worksheet 4 -see attached. Ignore the first couple of questions (they will be part of the cumulative problems for next week)

Hello everyone,

This week's workshop will review the last topics that will be covered on your midterm, then we will complete together a worksheet of cumulative material from day 1 to prepare for your midterm.

If a certain frequency of radiation is not ejecting electrons from the surface of a metal, is
it possible to eject electrons by increasing the intensity of the incident radiation?

How would we solve a question such as the question stated above? Does the intensity refer to the wavelength of the radiation?

Key for today's workshop.

Amir Bayat wrote:If a certain frequency of radiation is not ejecting electrons from the surface of a metal, is
it possible to eject electrons by increasing the intensity of the incident radiation?

How would we solve a question such as the question stated above? Does the intensity refer to the wavelength of the radiation?

NO. Intensity does not refer to the wavelength. Decreasing wavelength/increasing frequency on the other hand, can increase the energy of the incoming photon and eject electrons. Increasing the intensity only increases the number of photons available, which can increase the NUMBER of electrons ejected, but not the KE of the ejected electron.

Chem_Mod wrote:Here is the key for worksheet on the quantum world.

Is there a different key with the answers to the last two questions on this worksheet? This answer key only has up until question 6 and I wanted to check my answers for number 7 and 8 on the worksheet!

For #10 on worksheet 3, why is wavelength not related to speed per De Broglie's equation?

Here is the question: 10. Which of the following statements regarding electromagnetic radiation is true?

Since you all had your midterm on Wednesday, there is not too much material to review this weekend. Today's workshop will be a drop-in where you can bring in questions about past material or homework. Have a great 3-day weekend!

-Karen

Will there still be a workshop this upcoming week?

Oduwole 1H wrote:Will there still be a workshop this upcoming week?

If you look at the post right above yours it says there was a drop-in which I'm sure will continue.

All these worksheets were really helpful for reviewing for the midterm, thank you! Will any worksheets be posted to review for the upcoming Test 2? Thanks!

Will you have a review session this weekend to prepare for Test 2?

Attached is the worksheet for tomorrow!

Here are the answers to the worksheet from last night. The worksheet is a little ahead of class material as to not fall behind during Thanksgiving break where we will have no session. Test 2 will cover material after the midterm and up to the first 5 minutes of today (Monday) lecture.

Could someone please explain how to solve the first problem in Worksheet 6? The problem asks...

For the following nitrogen oxide compounds:
a. Draw the most stable lewis structure.
b. Determine the shape.
c. Determine whether the compound is polar or nonpolar.

Nitric Oxide (NO)

Nitrogen Dioxide ( NO )

Both of these compounds have radicals. How does this effect the shape of the compounds along with the most stable Lewis Structure?

For question 2(b) we are asked to determine the hybridization for the carbon atom in HCOOH. How would one solve this?

for 2(b) if you draw out the Lewis Structure for the molecule, the carbon atom is single bonded to a hydrogen and an oxygen and double bonded to another oxygen atom. Thus, it has 3 regions of electron density and is sp2 hybridized, which is trigonal planar.

Hello,

Sorry for late notice, but this Sunday's session (11/24/19) will be CANCELLED as I have personal matters to attend this weekend. Unfortunately next Sunday is also Thanksgiving weekend, in which we will not be holding session. HOWEVER, I will post my notes and a worksheet during week 10 for all the remaining material that will be covered on your final.

Happy Holidays!!

Hello everyone!

Because Thanksgiving is situated in Week 9 this year, and your final is this upcoming Sunday, I will unfortunately not be able to hold one last workshop with you all. However, I have attached my notes for coordination compounds as well as acid/base structures (the ones I usually write on the board) below. Feel free to use it to study!

I have also attached a worksheet with practice problems on coordination compounds and acid base structures with the key in a separate file.

Almost there!!

-K

Chem_Mod wrote:Hello everyone!

Because Thanksgiving is situated in Week 9 this year, and your final is this upcoming Sunday, I will unfortunately not be able to hold one last workshop with you all. However, I have attached my notes for coordination compounds as well as acid/base structures (the ones I usually write on the board) below. Feel free to use it to study!

I have also attached a worksheet with practice problems on coordination compounds and acid base structures with the key in a separate file.

Almost there!!

-K

Thank you so much for this resource! Will you be posting any other resources before the final?

These will be the final worksheets I have for you all. Good luck on the final!