AQA CHEM 2 June 2012 paper and unofficial mark scheme

Are you sure about that because they say that a 71 is about a mid high A and i am 3 marks away from that grade

How sure are u about these grade boundaries

Hi all
As promised, here is a link to the paper, I've scanned it and uploaded to my skydive on hotmail. It may take a while to load, but you should be able to download and print it off as you wish
June 2012 paper
The mark scheme is in the next post, thanks to knocker

Sorry to be an outcast on here, but do you have the CHEM1 paper for the June 2012 series?

I'm not sure, I'm at University and I don't have the past papers with me but I can have a look when I get home next weekend.

Has anybody got the official mark scheme for this paper??

Thanks in advance

(d) concentration of reactants decreases with time, hence frequency of collisions decreases as does the rate (2)

I don't think that's quite right; it's hydrogen peroxide (one reactant) decomposing — its rate is not dependent on two particles colliding, but the number of particles which possess the activation energy.

It's an unofficial mark scheme, I didn't claim that the all the answers were right, I'm not a teacher. I did this as a Chemistry student, most of the answers stated are those which I gave in the exam.