Just another rave review here. Professor Kaner is awesome. He communicates the material very well, does demonstrations, takes all questions during lecture, and hosts multiple office hours. The class is out of 330 points with the following contributions:

HW 30 points
Midterm 100 points
Final 200 points

The midterm was straight forward but time is a major issue, the average in my class was 65. The final is substantially harder and was harder than the practice final, which surprised me. I assume a B in the class is around a 60 or 65.

Last note: take his CHEM189 seminar, it's interesting and easy. He just talks about different materials for an hour a week. No homework, nobody even takes notes, you just listen. Easy 5 page paper due at the end of the quarter, but he lets you turn it in after finals so that it doesn't get in the way of studying.

Very cute and essential class to take with 171! It really builds on concepts that you learn and doesn't take too much time and is honestly super interesting to anyone even without a super deep chemistry background. You learn about a lot of materials like plastic, glass, gemstones and the like and it's very casual. For the last lecture we just talked about random things and he showed off his cat and talked about research and stuff and it was overall just good times and good vibes.

During covid, I didn't attend a single class live (he recorded them and I watched all of them at some other time, although I usually think he requires attendance) and just did the final paper (the only assignment) in about a day and got an A (which he says basically everyone gets.) Overall, highly recommend!