Memorize what you can... I'm due to take my exam soon, but from what I've been told (through Kaplan), certain things you need to memorize...liiiiike Planck's constant, the ideal gas constant, the mass/charge of an electron, or the values of common trig functions. These are things that they believe should be ingrained in our heads, I suppose. The more obscure constants, like the specific heat of water, will more than likely be provided. I suggest just using your discretion and common sense. If you're in a time crunch, I would definitely spend more time making sure I understand concepts that will certainly be tested rather than simply memorizing constants that may or may not be given.
