sat II chem

<p>i only have three weeks till nov sat II exam and havent even started studying yet LOL and i am aiming for 700+.
i've never taken any SAT subject tests ,so i dont know how i should study. how should i prepare for the test?
i have the barrons prep book ..do I need to read over everything and memorize all the laws , histories and vocabs they have ? I took chemistry last year and im now taking chem 2 (our school doesnt have ap..chem 2 is the highest level class u can take) but still everything in the prep book looks new to me . . . help me out and plz and please dont say i have too less time to do all this coz i have other options.
-desperate senior-</p>