Official AQA GCSE Chemistry Unit 2 24th Janurary NEW SPEC

I hope tomorrows exam poses a bit more of a challenge than the mock (June 2012 paper). I got 59/60 in the mock and I lost the one because I stupidly read the graph as saying 20 rather than 21.

Heres my 6-mark GC-MS answer.

The sample is vaporised. An unreactive carrier gas is injected which carries the sample through the coiled column. The compounds in the sample have different forces of attraction to the solid material in the column walls, meaning they will move through the column at different speeds. The compounds will have a different retention time. When the compounds reach the detector, a chart (chromatograph) is plotted. The mass spectrometer draws a mass spectrum which corresponds to the molecular mass number and percent abundance of the compounds.

Haha well I'd recommend myGCSEscience videos on youtube, just been making my way through all the C2 videos after only just discovering him!

I reckon it'll be a mix of everything to be honest, with lots of calculations thrown in! And after the biology, I think the 6 marker's likely to be something fairly unpredictable! Definitely think GC-MS and electrolysis will come up somewhere though

Quick question : if the exam question asks for one reason can you just list many reasons that you know to be safe? Or do they just take the first one?

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Im soo confused do we need to know about the haber process for the new spec C2

The haber process has been moved to C3. It is no longer on the C2 specification.

What did you guys get in unit 1 chemistry C1 ?

Do we need to know the exact process for purification of copper or is that C1?

June 2012 paper for New spec! :
Chemistry:
QP - http://science.taskermilward.org.uk/mod1/KS4Chemistry/AQA/Past AQA Papers/Chemistry 2 June 2012 H.pdf
MS - Can't find one, sorry!

I just types in paper code now and it came up!

what is the meaning of life?

Do we need to know the exact process for purification of copper or is that C1?

I think we do my teacher recommended that we recap it use this web site http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/ions/electrolysisrev3.shtml

Life has various meanings; you can either decide to focus on your exams, and try to get good grades, you can be carefree, and toss your books away, you can do various things in life. life is what you make of it.

WAIT WHAT? Do we need to know the electrolysis of impure copper??? pretty sure that was unit 1. Can someone verify this for me please??

What are reasons why an experiment might go wrong? Such human error but what else?


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