<p>Hmmm...good question.</p>
<p>I recommend what Greg B. suggested...it's called "Chemical Principles" by Atkins. It has EVERYTHING that might show up on the olympiad....in fact, over the summer I'm studying this + campbell's EVERY NIGHT (one chapter in this, 3 in campbell's since I already took AP Bio and thus know the Bio stuff well)</p>
<p>Try to get the purple book of past olympiad problems...it has USNCO multiple choice dating back to 1995, IChO problems dating back to 1997 (or before perhaps) and Indian and Australian national exams. One word of advice: The Indian exam is HARD. If you can get just about everything right on it (more than 90 out of 100) then there is no way you fail to advance to internationals....the organic chem on this SEMI FINALIST exam is insane...but hey it's worth it. </p>
<p>If not that, then at least get the book they use for camp (I'll ask Greg what the name of it is) because from what I hear the camp uses a specific organic chemistry book to test the camp members for making the USA team.</p>
<p>I'm so annoyed with my school's lack of knowledge...there wasn't even a mention of MATH OLYMPIAD in my school until I FOUND the site for it in the summer of '05. I didn't find out about the rest of the olympiads until this past summer, and I foolishly abstained from taking the Bio exam, which I probably would have gotten semi finalist on in 10th and maybe even finalist this past year had I known about it...</p>
<p>Oh well, at least there's next year for the All-USA goal lol.</p>