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    what do you think will come up and any guesses for the 6marker?
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    anyone got jan 2013 june 2012 paper
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    (Original post by yusuf_777)
    anyone got jan 2013 june 2012 paper
    are they not on the aqa website?
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    (Original post by TherHig)
    are they not on the aqa website?
    The june one is. The Jan 13 isn't
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    (Original post by Oreocookie98)
    what do you think will come up and any guesses for the 6marker?
    I hope its a comparison/evaluation question - they're really easy tbh
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    http://www.schoolplannerbook.com/upl...P-QP-Jan13.pdf C1 JAN2013 PAPER ONLY
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    January 2013: (Updated)

    C1 Higher:

    Question Paper | Mark Scheme

    C1 Foundation:

    Question Paper | Mark Scheme

    C2 Higher:

    Question Paper | Mark Scheme

    C2 Foundation:

    Question Paper | Mark Scheme
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    youre welcome
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    can anyone help me understand alloys? iron from the blast furnace is 96% iron but this is really brittle. high carbon steel (1.5% carbon) is hard because of the high amount of carbon yet blast furnace iron (is it called pig iron?) is 4% carbon so surely it would be very strong?
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    (Original post by TherHig)
    can anyone help me understand alloys? iron from the blast furnace is 96% iron but this is really brittle. high carbon steel (1.5% carbon) is hard because of the high amount of carbon yet blast furnace iron (is it called pig iron?) is 4% carbon so surely it would be very strong?
    low carbon steel easily shaped 0.1% used for car bodies and rest is stainless steel .
    alloys are harder than pure metals and pure iron tends to be to bendy,
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    i want the 6 marker to be fractioal distillation and questions on emulsifiers and extracting metals dont really want graphs i got a feeling plate tectonics will come up .
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    busy now going to do another hardcore hour maybe alloys ?
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    Can someone help me with this question on Jan12 c1 paper, question 6 (b) (ii)
    Reacting calcium carbonate with sulfuric acid gave different results to nitric acid.
    the symbol equations for the reaction of calcium carbonate with sulfuric acid and with nitric acid are shown below.

    CaCO3(s) + H2SO4(aq) -> CaSO4(s) + H20(l) + CO2(g)
    CaCO3(s) + 2HN03(aq) -> Ca(NO3)2(aq) + H2O(l) + CO2(g)

    Describe how the results for sulfuric acid are different and use the symbol equations to explain the difference. (3marks)
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    (Original post by Sophsha)
    Can someone help me with this question on Jan12 c1 paper, question 6 (b) (ii)
    Reacting calcium carbonate with sulfuric acid gave different results to nitric acid.
    the symbol equations for the reaction of calcium carbonate with sulfuric acid and with nitric acid are shown below.

    CaCO3(s) + H2SO4(aq) -> CaSO4(s) + H20(l) + CO2(g)
    CaCO3(s) + 2HN03(aq) -> Ca(NO3)2(aq) + H2O(l) + CO2(g)

    Describe how the results for sulfuric acid are different and use the symbol equations to explain the difference. (3marks)
    lol what topic is that?
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    (Original post by Sophsha)
    Can someone help me with this question on Jan12 c1 paper, question 6 (b) (ii)
    Reacting calcium carbonate with sulfuric acid gave different results to nitric acid.
    the symbol equations for the reaction of calcium carbonate with sulfuric acid and with nitric acid are shown below.

    CaCO3(s) + H2SO4(aq) -> CaSO4(s) + H20(l) + CO2(g)
    CaCO3(s) + 2HN03(aq) -> Ca(NO3)2(aq) + H2O(l) + CO2(g)

    Describe how the results for sulfuric acid are different and use the symbol equations to explain the difference. (3marks)
    Different acids make different salts...
    So
    Calcium carbonate + Nitric Acid ---> calcium nitrate + water + carbon dioxide
    So nitric acid reacts with it to make a nitrate salt.

    Dunno why it's three marks though

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    Really stuck on how to balance any equations??? pls help x
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    does anyone have the specification for this exam? cant seem to find it on aqa's website:confused:
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    (Original post by Sophsha)
    January 2013: (Updated)

    C1 Higher:

    Question Paper | Mark Scheme

    C1 Foundation:

    Question Paper | Mark Scheme

    C2 Higher:

    Question Paper | Mark Scheme

    C2 Foundation:

    Question Paper | Mark Scheme
    thank you so much for this!
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    (Original post by momola)
    Really stuck on how to balance any equations??? pls help x
    i was stuck too but i found this really helpful
    http://www.wikihow.com/Balance-Chemical-Equations
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    guys use this guy to get your grades he was very helpful he can teach all biology,chemisstry , physics on youtube awesome !!!!! i didnt even understand how to balance equations now i do just check it out best way to understand if stuck:

    http://www.youtube.com/watch?v=Fj9Z_ffOYpsv
 
 
 
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