Dr. Pang is awesome. After coming back from quarantine and getting throwing into 30AL after taking 20L virtually, the transition was made extremely comfortable thanks to the setup of this class. Dr. Pang's lectures are very clear and engaging, and are also podcasted online. The workload is very manageable and labs are structured quite well (and you can leave early if you finish—physics department has something to learn from this class). You spent most of this class in the lab (go figure) with the TA, but Dr. Pang always drops into the lab and looks around and is generally available for questions. He's also a total chad and will notice if you're doing something wrong with your sulfuric acid solution and step in and fix it without wearing gloves or goggles. He's never upset if you mess something up, and your grade won't suffer if your percent yield is low, as long as you can explain why (again, physics department, you really got to step it up). Tests are fair and not too hard as well, and this class is a great complement to CHEM 30B, which will take all your time anyway, so it's nice that this class is much easier.

Dr. Pang was a really great instructor to have had in my first in-person lab straight from Zoom classes. Taking Chem 20L online was one of the most boring experiences and I was worried I would be completely lost in an actual lab setting coming back, but this class was well structured and the experiements themselves are not hard, they're surprisingly really fun. The lab reports are easy to get full points on if you have a fair TA (I had Kara) and the project at the end of the quarter was also pretty easy because Pang gives you lots of tips on how to start it and helps you if you get stuck or mess up. In terms of exams, we had our midterm online with 3 hours to take it. If you actually study the concepts prior to the exam, you'll probably do well and be done in about 1.5 hours but even if didn't study before and just referred to the slides, it'll take you the whole time but you can still got a good score. The final exam was fair and you'll do well as long as you UNDERSTAND THE CONCEPTS. I took this class alongside Chem 30B so most of the concepts on spec were easier to understand but everything else can be understood if you watch his lectures and do the problem sets he gives. If I could take this class again, I'd choose Pang because I really think he's a genuine person who gives you the things you need to succeed in the class.

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Prof Pang is such a great professor. This class was completely online so naturally we couldn't do the experiments. He showed us videos of each experiment (which all looked really fun to do in person) which were made by different students in the past. They were funny in a weird way because the music varied from monotoned voice overs to an anime medley but overall the class was really straightforward.
We had a prelab and post lab each week with one midterm, a final, and a writing assignment. Everything was pretty easy since everything was just on the slides that he gave. Definitely take this class during remote learning if you don't want to think/stress out but the experiments looks pretty fun to do in person if you can take it then.

This class had a fairly easy workload. The midterm and final only accounted for about 20% of the total grade so completing the pre and post labs is the main part of this course. Some concepts are recycled from 20L and there is very little organic synthesis. Like most labs your experience depends on the TA.

Professor Pang is very clear and helpful, and the class is very straightforward. However, if the concepts in this class will be critical to your major, I would wait to take it in person. Taking it online is mostly just learning the analysis/concepts, but its impossible to gain any lab experience, though this is not Pang's fault and theres really nothing he can do about it. For the circumstances, he is doing a good job and if you want to just get it over with go ahead and take it.

I took this class spring 2020 when all classes were online. Pang and the TA's try hard to make good lecture material and videos of the experiments, however I learned next to nothing. I only skimmed slides for the worksheet answers and didn't listen to him talk or watch all of the videos. The grade was almost all worksheet based so the class was merely busy work finding the answers in the slides. I also took Pang for 20L and he is a great guy, but lab classes online are impossible to do correctly and I didn't learn much. The class is an easy A so if you don't what to spend 3 hours in lab take it online right now.

Although the pandemic has consumed Spring Quarter 2020, Professor Pang has done an amazing job in helping his students navigate past this. Lectures were based on PowerPoint slides with no live lecture and he also had you complete weekly labs which included both pre-lab and post-lab material. CHEM 30AL also had two quizzes (which I believe was used to compensate for the midterm and final) and a paper to write. Lectures, lab homework, and quizzes were fairly do-able despite the huge amount of stress. As the quarter progressed, some problems arose in the world which included but not limited to the protests and the pandemic. Professor Pang did as much as he could throughout the quarter to ensure his students were relieved of stress and the last two assignments (the final quiz and last lab homework) he decided to remove quiz two from the course and have the last homework as optional extra credit. From a student that has been working full-time during the pandemic, Pang really cared about our well-being and I am eternally grateful for him. He posted three ways he would grade the course and out of the three the highest will be your final grade, he said himself "I understand that the COVID-19 and the current social and political climate has adversely affected many of you academically and emotionally during the quarter. Unlike many other classes, I believe there are more than enough graded work (18 worksheets, 1 quiz and 1 writing assignment) in this course to provide an adequate evaluation of a student work." Thank you, Professor Pang for everything you've done to ensure your students mental well-being throughout Spring 2020.

Pang isn't as godly as everyone here makes him to be. He's still pretty damn good, and knows how to do his job well and teach. If you took Chem 20L with him, expect the same thing, but double. There's 2 labs per week, almost all of them with a pre-lab report and post-lab report. There's lecture once per week as well, with Pang handing out PowerPoints to follow along.

Pang is still, as always, organized as ever on CCLE, giving you everything you need. I would highly recommend buying a lab report off someone else because they can come in handy when it comes to some of the calculations on the pre-lab/post-lab. Pang also uploads a practice final and midterm a week before the examination. The midterm was pretty chill, but the final was almost impossible to do due to it's difficulty. Definitely study the PowerPoints, because those can be a huge help. I would highly recommend taking this class alongside Chem 30B, because of the content overlap, making this class easier.

The first 8 weeks are pretty much the same thing, but the lab soil project is where things get incredibly difficult. You are paired with 3 other people, and have 2 weeks to separate and identify the inorganic/organic compounds in a soil mixture, using the techniques you learned in during the first 8 weeks of the course. Much of the final has questions that relate to the soil lab, so do yourself a favor and TRULY understand the chemistry behind the lab, and you should be fine.

Johnny Pang is the man. Take him, you will not regret it. He is probably one of the most empathetic teachers to exist on South Campus. I really liked that unlike 20L. the 30AL exams are more concept-based rather than math heavy. He is very approachable and friendly. The soil project can be stressful depending on how prepared you are for each day. My group kind of wasted our first two days because we weren't prepared. You get four lab periods to do the soil lab. My advice is not to waste time and prepare a detailed procedure for the first day of lab in case you have mistakes down the road that causes you to have to redo things. But overall, I would say this class was not too difficult, but you certainly can't sleep through this class.