well i guess ican help u guys out ...
me and my friend sat and looked thru all the paper 6 years from 2003 to the latest and this is wat we got --
Physics :
1) measurement and errors
2) Circuits and symbols
3) Constand variable ( like if there is an experiment some variables are supposed to be constant wat are they and etc.)
4) Temperature
5) Mirrors and lens
6) Proportional
7) Latent and heat loss
Time - pendulum always asked
9) Variable resistor
10) Rate of cooling
Chemistry:
1) Apparatus
2) Rate of reaction
3) Graph
4) Experimental observation ( like the electrolysis quests. )
5) Identification of ions *** ( important )
6) Test for gas/ organic chemistry
7)Experimental improvement ( eg. if u need to change ONE experimental thing without changing the apparatus .. that kinda thing )
Experimental technique ( so far they asked crystallization, titration, test for catalyst, chromatography, pH and electroplating )
hope these help ... i dont have for bio cause i dont take it