2016 AQA Chemistry C2 - Unofficial Mark Scheme 2016

I'm afraid you are incorrect, magnesium is more reactive than hydrogen so hydrogen forms at the cathode. Most people I know supported this conclusion with the chemistry data sheet; using the reactivity scale. Don't worry about it though it was only 1 mark


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20/21 for a C
30/31 for a B
40/41 for an A
50/51 for an A*

Are nanoparticles smaller or bigger than atoms???

Bigger, they often consist of a few hundred atoms( as stated in the specification)


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It was 200kg right coz it gave the best yield, most profit and least went into rivers and lakes??

How many marks was that question

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I'm pretty sure 180kg will be in the range, I was almost going to write that. I'm guessing the range will be 160-310 or something

Pretty sure it was only 1 mark ( I may be wrong but I don't understand how you could get 2 from it)


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There's no chance an A will be 40/41, more like 45/46 - your predictions were the actual boundaries for 2015 C2. An A* will be 53. It's all about UMS anyway, not just how well a person did on a particular paper; a couple of raw marks off an A would be like 75-79 (UMS) marks.

But didn't the line for yield start to level off after 190, I'd, I put 190 but I'm not sure

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Yeah, I put 180 because on every graph that was the reading that was the highest before any graph levelled off. Surely thats right?

Was the tick box about the neutralisation reaction the first, second, third, fourth or fifth box because i cant remember which one was which. can anybody remember???

Hey ,
For the question for why did the mixture go cloudy ?
- I said that an insoluble solid was formed in the reaction which turned it cloudy ( I also named it but I forgot the name of it now ) , this is the right answer for two marks
BUT
I also put that a gas is formed which turns it cloudy.
Does this matter? Or would they ignore the wrong answer and just mark the right answer ?


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Bigger, they often consist of a few hundred atoms( as stated in the specification)


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Cheers! Yeah I put that nanoparticles are 1 and 100nm in size and said that so they are bigger than atoms

I'm afraid you are incorrect, magnesium is more reactive than hydrogen so hydrogen forms at the cathode. Most people I know supported this conclusion with the chemistry data sheet; using the reactivity scale. Don't worry about it though it was only 1 mark


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To get a C overall you need 240 UMS POINTS. So across the the 3 papers and Controlled Assessment you need a average of 60 UMS POINTS per unit. Hope this helps you a bit.