Take this class with Pang! His lectures are helpful (though I definitely skipped out on about half of them), tests are easy, and lab reports are straightforward. Follow the instructions on the guidelines and you'll be good. Just don't fall behind or start the reports the night before they're due, they can take a while.

For the exams, just study the study guides and you won't have to worry.

Definitely recommend Professor Pang! Great guy that cares about all his students. He would come in during every one of my lab sessions and sometimes I would talk to him (and I was starstruck every time!!!).

Dr. Pang is a wonderful, wholesome, and caring professor. He was able to make my 8AM lecture engaging with the occasional jokes and bruin pride reference! He also made packets for us that we just needed to fill in some blank information in order to follow along with the lecture which was very helpful when I had to miss a lecture. Also, the midterm exam and the study guide correlated really well, which I really appreciated. The study guide covered what would be on the midterm and the exam wasn't too difficult or easy. This was by far one of the best courses I have taken so far. I highly recommend!!

Great professor; cares about student learning and is fun and engaging in lecture. Make sure to turn in work on time and to follow instructions, and the class will be just fine

If you simply do the work and put in effort, it's pretty easy to get an A in the class. I never went to office hours, but from what I've heard, Pang is pretty helpful. The lab report guidelines are clear and detailed, so if you follow the instructions, there is no reason why you shouldn't get an A. If you are able to do the study guide he posts for the midterms and finals, you'll be fine for the tests. The labs usually don't take the full 3 hours, and I've even gotten out of lab 1.5 hours early a few times. Overall, this class is pretty straightforward.

Overall Johnny is an excellent professor. For this class, as long as you put in the busy work and some slight studying, there's no reason to not be able to get an A.
Lectures are quite engaging, and despite his quick talking and slight accent, you'll have no problem understanding him whatsoever. Everything is very easy to follow; he prints the slides out on paper for all the students, and you can follow along and mark up wherever needed. He's often quite funny, and uses some very childlike animations to describe certain concepts, so definitely don't miss it! Also, during one of the lectures, he gave all of us glowsticks (complementary gifts for everyone), so his lectures are quite entertaining. He's very straightforward and very concise about what he's teaching, and you never feel like there''s something he hasn't explained properly.
The labs are honestly a lot of busy work and a big suck on your time, but nothing else. Going to office hours for these really help, since the TAs are the ones that grade your labs, so make sure you are doing them correctly and hitting their explanations! If you regularly go to office hours, there's no reason not to be able to get nearly all if not all of the lab points for this course. The experiments themselves are quite tedious however, you will learn to hate the word "titration" by the end of the course, as those experiments are typically the longest since messing up means redoing the titration again. Also, nearly half of the experiments are group experiments, so it's not as bad as it could be.
The exams (one midterm, one final) are very strict about the grading! There's a specific answer key, that gives the TAs no leeway to grade differently, so if you are banking on influencing your TA to grade more leniently, that won't work here (I know some people who do do this however). Focus on significant figures and explaining everything clearly, as the rubric is very specific about making sure you hit those marks. This is probably where you lose the most points (I certainly did in this department; I got a C on the midterm because of it, but the average was around an 85% so don't worry about the difficulty), but conceptually, the problems themselves are not the most difficult; just study from the study guide that he posts. The final was all multiple choice (out of 180 points but scaled to 150), so that was extremely easy (or hard, if you hate multiple choice). I definitely feel like I guessed on some of those problems, but because of the grading scheme (straight scale out of 450 points, with the final 150 and the midterm 50) I was still able to snag out an A, so it's definitely doable for you to do well in this course! Also, for what it's worth, after the quarter Pang sent out an email stating that the final average was a 73%, but more importantly, the overall class average was an 87%, and 50% of people got some form of an A, which is a pretty darn good deal if you ask him. Cool dude, snazzy lecturer, and would definitely take the guy again if possible. highly recommend.

The lab portion of this class was very easy to follow and the labs were somewhat interesting. The lab report grading seemed fair, with a heavy emphasis on sig figs. The midterm was also heavily graded on sig figs and other computations. Personally, I found the tests very challenging. I don't know if other people just found them easier, or maybe I didn't study enough for them, but I had a really hard time remembering all the rules and nuances for different experiments and problems. Overall, this was a pretty good lab class, but definitely pay attention to what Pang says, even if it doesn't seem like it matters to the lab that you're doing, because some of the smaller details seem to reappear on the tests. He did provide a very lengthy study guide, but I thought it was too long and given to us too late to be fully completed and understood.

Pang is a GREAT professor. Everything is laid out to you clearly. He’s funny. He’s personable and comes in to labs to check on you and make sure you understand everything. He does everything to make sure you understand the material. 10/10 would take his class again even though I got a B

The best Chem professor at UCLA. Just do the work and should get an easy A nothing is too hard at all. Only bad thing have to buy lab coat, manual, and $50 notebook for the class. (can go to either lecture if he is teaching two sections)

Labs - read lab manual before going and always ask TA for help if don't know what to do next. For some labs need a steady hand such as in titration so move slowly and carefully and will still finish the lab over an hour early plenty of time, grade from pre-lab and post-lab but his online instruction so clear so get 100% every time

Online writing - Only one 300 words essay follow the direction which are very clear and include all parts should be easy A (plus if you do well he will give you extra credit on midterm)

Midterm (only one) all computational if you do all the problems one the study guide he posted you should get a 100%, don't need to reread labs and stuff just do problems

Final - Does not tell you but will be mostly multiple choice, when studying focus on concepts and reread lab procedures to do well on multiple choice section which is the majority of it. As with midterm to practice problems he posts on study guide

Excellent professor with a great sense of humor (HA HA HA... if you took his Winter 2019 class, you’d get the joke). Lectures were vague, but it wasn’t his fault because class only meets for an hour every week. Some labs were interesting, while others are a pain to do. Lab reports took forever, and the final was very hard compared to the midterm. Overall, I’d recommend this professor, and you will definitely learn a lot from him.

Dr. Pang was an excellent professor for Chem 20L. He has taught this class a number of times now, and has everything down to a science. He has all of his materials well organized, and has plenty of office hours to help students individually should they have further questions. Here's some tips if you are taking him in the future:

-Do the study guides before exams, they help prepare you well for them.
-Before the final, also make sure to review the experiments and set ups. The final is significantly trickier than the midterm.
-I personally didn't do the practice problems/supplementary readings and didn't find it necessary, however if you are struggling feel free to look them over.
-Check your pre-lab study questions for sig figs with friends before turning it into the TA