<p>I’m very confused about chem and chem labs. Are labs assigned to you or do you have to choose one on the registration? Each lab section meets at the same time on Tuesdays for lectures, but the labs themselves are different days of the week. Plus they meet from 1:40 to 5:30. Are they really 4 hours long, or do you just go when you can or need to go? Does everyone go to the lab lectures?</p>
<p>You sign up for lab at registration and you can pick from whatever days are still available. For whatever reason Thurs. always seemed to be the most popular so it could be hard to get. Some of the labs do take 4 full hours to do, and maybe once or twice a semester you still won't be finished by 5:30.</p>
<p>A lot of people skip the lab lectures because they're early in the morning. Depending on the professor, they can be really informative or a complete waste of time. Occasionally they're so awful I actually came out of the lecture understanding less than when I went in.</p>