Hey bro.today was my AS chemistry lab exam 9701/33.my order of experiments conducted by my invigilator was 3,1,2. Experiment 2 should have not have been in the last order because it was a decomposition experiment where a mass in a crucible was told to be heated and left for 10 minutes-20 minutes.And instructions were written on the question paper to carry on with experiment 1 or 3 while waiting for the mass to cool.