Well that's very fair point. Although, I don't think I know anyone whom has done AP courses in Malaysia. Could be me just being extremely unobservant though. Just a question out of curiosity, would you happen to know which places offer AP courses for transfer into the states?

I hope some seniors from the 2012 SPM Thread will see this .

When describing / planning experiments , be it for Paper 2 or Paper 3 , must we include the apparatus used in the procedure ? Many trial papers' mark schemes don't include the apparatus .

Example :

1 . 50 cubic centimetres of 0.2 mol / cubic decimetres of sodium thiosulphate solution is measured and poured into a conical flask using a 10 cubic centimetres measuring cylinder .

I always include the apparatus but my teacher says once the volume is stated , it isn't necessary .

Just include it if you can, otherwise don't. But you must include it in experiments that require very accurate volumes of solution like titration and preparation of standard solution.
Also :

Number of particles per unit volume , or number of hydrogen ions per unit volume ? Experiment regarding the effect of temperature on the rate of reaction between hydrochloric acid and sodium thiosulphate solution .

When answering a question specific to the reaction, you have to use the name of reactant particles. But if you just answering in general, the term 'particles' is good enough.
Plus :

2011 SPM Paper 3 , same experiment ( or was it about concentration ? ) , a question asks :

State one observation .
The mark scheme in the past year questions book states :

Yellow precipitate is formed .

I thought it should be 'the time taken for the mark 'X' to disappear in Experiment 1 is the shortest' because we can look at the time on the stopwatch , but not the colour of the precipitate ?

Unsure. But I don't think the book is wrong in this case.

Are angles considered at SPM level chemistry?

I'm not sure . An SPM marker said it would be more accurate to draw it at an angle , but my teacher says otherwise . Also , is it accurate to draw it straight , without an angle ?