IMO the whole exam was just out of context, after having done all exam past papers on the AQA website, the context of this exam was totally different. Usually first 2question is about the charges of protons and the relative masses of electrons. Also they ask you to deduce an element and find the element and loads of other stuff were different but there were some ordinary questions like why has silicon got a high mp. I just hope that the grade boundary is going to be A LOT lower.i would estimate 73% for an A.(I hope)