This seems realistic. Did anyone keep a record of their multiple choice answers? I rushed through it and think I got quite a few wrong but I got: BDDCCCBDCBCBACBADBAD
I can't remember the order of my answers but I did recognise that the vast majority of my answers were B's in multiple choice..
In fact, one of the highest it has ever been is 83%...
One of the highest might have got 83%, but that happened recently I think. They cannot exceed 80% in our exams because we are doing the new specification and its the first year, which involves more content to remember for both of the exams. A will probably be 53/54 which is roughly 75-77%.
I think there are always 20 marks available in MCQ. Shape around graphemes, I put tetrahedral.
I put trigonal planar. Due to the fact it has 3 bonded atoms and a lone pair - which against normal rules would cause it to be trigonal pyrimidal. However, graphene is one layer of graphite, therefore is planar. Due to its symmetrical nature and the fact that the lone pair, then becomes delocalised - hence why it gives graphene conducting properties - it had to be trigonal planar. Really funny question, would've caught a lot out.
For the question about "How can you make sure that all of the water of hydration has been removed?" or something like that - do you think they would accept adding cobalt chloride paper?
For the question about "How can you make sure that all of the water of hydration has been removed?" or something like that - do you think they would accept adding cobalt chloride paper?
They'll be a few correct answers. Personally I just said heat for a longer period of time or calculate theoretical mass of water from an equation.
I think the grade boundaries will be the same as usual. Even if it was an easier paper than previous papers you have to take into account that for us we have to learn everything whereas before the topics were split