I'm an incoming freshman this year majoring chem engineering. During orientation, my advisor put me in chem202 and chem203. I thought I'd be taking chem102 and chem103 from the research I did before orientation (not that it really matters). But I was just wondering, what exactly are the differences b/t the classes? When I looked online the only difference I saw was that one was called advanced while the other wasn't. So, how much exactly more difficult is chem202/203 over chem102/103?
Second, I took the Physics C AP exam but scored a 4. I felt very confident in the exam, but it didn't come out to what I had expected. So I'm considering placing out of the class. I'm pretty strong in this subject and I know I just have to score higher than a B. But how difficult is the proficiency test for Phys211?