Professor Pang is an incredibly kind, caring, and understanding professor. His lectures and overall class are clear, concise, and organized. He cares about student learning which is evident through his office hours as he explains concepts thoroughly and slowly, regardless of their simplicity. I do wish he posted recordings as he did in previous years, but that is a minor caveat.

Dr Pang was very organised, consistent and reasonable with his expectations. He made the content applicable and interesting, and focused on delivering the material efficiently. I would take another one of his classes if I had the chance.

Pang was a great professor; he explained things in a way that was clear and concise. He taught chemistry better than I have ever been taught before. I took 20B last year, but I wish I had taken 20B and 20L concurrently since Pang provides such good insight on the material.

I found Dr. Pang to be a really engaging lecturer and he was generally very clear about everything. I liked how he even came to the labs sometimes, it felt like he really was involved with his students' learning. I think it would be nice if the slides that were posted were already annotated from the beginning, since that would be easier for studying ahead of time, but that's just a minor complaint. Also, if lectures were recorded, that would be nice too, so that we can go back to them.

I enjoyed this class a lot, and Pang is nice, clear, and understanding. The midterm quiz was an online and open note, so I didn't find that too difficult. The labs themselves were interesting, but the pre-labs and post-labs did take time to do, so I would make sure that you don't wait till the last minute to do them. Your TA also does matter since they grade your pre-labs and post-labs (shoutout to Emily!), and I asked my TA a lot of questions just to confirm that I was doing the right thing so make sure that you get along with your TA well.

I flopped badly on the final though, which is why I ended up with a B+. It's something that you need to study for, but it isn't hard in terms of content. I do think that if I studied better I would've been able to get an A/A-, as I had an A before the final. Lectures are also optional since he records them and doesn't take attendance, and I'd recommend just watching them on 2x so you make sure that you understand everything. However, you don't need to watch them if you can simply understand the slides; I just like being thorough with the content (clearly didn't work though for the final lol).

johnny made me feel like i could cure cancer or sumn. a beautiful spirit and an incredible soul, you will do well in this class if you care a bit insyaallah

Agreed with most of the things other people have said about Pang. He is very concise, and should be the golden standard for professors here at UCLA. Lectures are easy to follow and Pang provides details to the T for labs and assignments, for the most part. The only thing that was missing from this class was grading details. The most that you get back are the assignments graded by your TA, the single midterm in the middle of the quarter, and a confusing grading system for the writing assignment. I wish Pang would use Canvas to setup a grading system like other professors but with labs I understand it can be difficult. I was on track to get an A this quarter but had a bad day and performed well below average on the final, so that sucked.

Assignments are very straightforward and each question is detailed in terms of what you need to do to solve. Pang uploads lecture slides and recordings making it easy for those who miss a lecture. I had a lot of anxiety approaching this quarter about this class because I was horrible in high school labs, but most of the labs are actually well under the 3-hour timeslot and from what I've seen Pang is great at picking chill and respectful TA's.

To do well in this class, I recommend following the practice problem sets. Pang attaches answers (unlike Barr lol) with real explanations so you can struggle but then understand what exactly happens. They're also pretty easy to study from in my opinion. Start the prelab and post-lab assignments as soon as you can. Especially in the second half of the quarter, try to start them right after your lab is finished because they often draw on information from the lab i.e. the normality of a certain solution or any observations that weren't asked of you to make in the lab itself. Sometimes these assignments took me a few hours so take that as you will; you will get exhausted trying to do it the night before, so give yourself some room to breathe. They aren't hard, just a bit time consuming making sure you get everything right. Also, some assignments are group-oriented. Other than grading and the heavy materials fee (I think I ended up paying about $130, something like that), this class is great.

chem lab is very easy to manage if you stick to a routine: it's a lab for three (3) hours every work, then post-lab + pre-lab, and it's like that every week, so my advice is to just don't fall behind!

your grade is cumulative on lab work (which should not be a problem if you're doing everything), the midterm quiz (it was online, but he's very picky with significant figures, so DON'T fumble), a final in-person (which is cumulative), and the calibrated peer review to assess if you know how to perform a lab question :)

my biggest advice is to focus on the midterm quiz + final because those two are a big part of your grade!!! every lab always includes extra support from your TA :-)

Pang is a great chem lab professor! The pre/post-lab assignments aren't too heavy, and as long as you're taking chem 20B concurrently or you go to lectures/study a bit, you'll be fine. The midterm was an online test that counted for only 10% of the overall grade, and the final was pretty easy. Labs can be fun sometimes. Try your best to purchase your lab equipment, notebook, and manual from someone to avoid breaking your bank just for some class supplies.

Professor Pang is probably the best professor I've ever had at UCLA. He's the most caring, understanding, and engaging professor I've ever come across. His lectures are clear and are recorded, so going to them is optional. In terms of coursework, the pre-lab and post-lab reports can be tedious and dull; however, they should take at most 4-5 hours to complete each week. I took this class concurrently with 20B (with Barr of course lol), so it was nice seeing what we were learning being applied. In addition to lab reports, he has one online midterm quiz, one online writing assignment, and an in-person final exam. The midterm quiz wasn't too difficult if you've been paying attention in lecture and being diligent with your lab reports. The online writing assignment wasn't too difficult either since it was sectioned off into 3 sections with staggered deadlines. Overall, this was a fun class to take, and I would definitely retake it.

Grade Breakdown:
Pre-lab reports: 16%
Documentation of lab work: 30%
Lab performance: 8%
Online Writing Assignment: 5%
Midterm Quiz (Online): 9%
In-person final: 32%

Last notes:
-We were required to purchase a paper lab manual from the UCLA bookstore
-He gives numerous optional supplemental practice problems to assist with lab reports (they were also very helpful for the midterm and final)
-The grade breakdown is accurate only for Winter Quarter 2023 and may change based on the professor