I think Trebla means that he's been selected to write the Chemistry National Qualifying exam in October on the basis of decent results in the RACI National Chemistry Quiz?
In any case the National Qualifying exam is abt 2 hrs I think, consisting of 15 multiple choice questions + you must do 3 out of the 4 long answer questions in the paper. The syllabus for this exam is probably available at the science olympiads website -
http://www.aso.edu.au/www/index.cfm
- just search around a little bit. The questions are of year 12/first year university level, but some of the long answers can be figured out on the basis of the information you're provided with. For the multis, however, you'll have to knoiw your stuff to do well. I recommend a general chemistry textbook such as Silberberg or Zumdahl each of which is called "Chemistry" I think. An organic chemistry book is also of good use as theres generally one organic chemistry question out of the long answer questions. Mcmurry's Organic Chemistry is useful for that.
So anyway, pass that stage - ie be in the top 20 in Australia or thereabouts - and you'll be invited to attend a summer training school in Canberra generally around 8-24 jan (16 days always). During that time you stay in college with 20 other chem achievers in Australia, along with physics and biology people at ANU. You get heaps of chemistry crammed into you here - 1st/2nd year kind of stuff and 5 hour practicals.
At the conclusion of this camp, you have a 5 hr lab exam and this, in conjunction with the 2 x 3hr theory papers in March are used as a basis for selecting the team to represent Australia (consisting of 4 members) at the International Chemistry Olympiad event hosted in different countries on a yearly basis. The International competition takes place generally right about now. This year's is at Taiwan and it finishes in a few days' time. Anyway at the IChO (international chemistry olympiad), there is a 5 hr theory exam and a 5hr lab exam. Out of roughly 250 ccompetitors from 60-odd different countries, the top 25 get gold medals, then next 40 silver and the next 80 bronze, or something similar. And that selection process happens each year.