Data based on 2 reviews.
Significant Digits. That’s it. Learn them.
I had Delcioppo for Chem 20 and 30 and honestly, he made the subject really fun. Pay attention and don't use your phone in class; he knows when you're doing so and will call on you, often randomly. So long as you do all of the homework before scheduled exam dates, you'll be fine. Pay attention during his review classes!