As far as conceptual concepts, if you know your periodic trends and understand some formulas then you can answer questions where they change conditions or just simple numbers. Dont just try to memorize your way through a lot of gen chem, try to really understand why things are set up that way and what happens when you change certain conditions.
This is the best way I can describe it and its one of those things that unfortunately doesnt totally make sense until you actually take the DAT. Thats how it was for me anyhow.