As for Chemistry, the CS Advisor told us you can’t proficiency out of it. You can place into a higher course, but the Chem 102/104 (I think those are the correct course numbers) are required. I have also heard that Chemistry at UIUC is very difficult.
Here again is the link for you to use to see what you need on the AP Chem exam to get the credit. Note it appears also that you only get the lecture, not lab credit, however, that doesn’t make a lot of sense to me that someone would have to just take the lab.