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Edexcel chemistry (C2) 2016 unofficial mark scheme ??? Watch

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    Does anyone have the unofficial mark scheme for the additional chemistry exam today ??? Edexcel
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    (Original post by emilie.rafferty)
    Does anyone have the unofficial mark scheme for the additional chemistry exam today ??? Edexcel
    I dont even remember the questions that's how tired I was.
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    (Original post by CorpusLuteum)
    I dont even remember the questions that's how tired I was.
    I thought it was a good paper just that last six marker was quite hard, hoping I get a few marks off working out the empirical formula
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    (Original post by emilie.rafferty)
    I thought it was a good paper just that last six marker was quite hard, hoping I get a few marks off working out the empirical formula
    it was MgO
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    Question 1a was Element : Z
    (b) : T ,X and ...
    Isotopes : a different version of the same element with the same amount of protons and different neutrons.
    Formula NaH(4).. 0(3) Percentage : 17.5/35 %
    Ti... Obtained from 500g... : 126.3 tonnes
    Last Question : Formula was MgO

    Feel free to addmore answers and questios to this as I can't remember all of the questions and answers thought I should just start this off as no one has appeared to have done so...
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    Sodium- Yellow Flame
    Barium Meal is safe despite being toxic because Barium is insoluble and therefore does not reach the bloodstream, etc.
    Dot and Cross diagram had 3 'Cl' circles joined to a 'P'. Each Cl shared one electron with the 'P' and you had to make sure each element had a full outer shell in the end.
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    Whenever i leave an exam, I immediately forget the questions! I am pretty annoyed at myself though because for the percentage mass question, i completley ignored that here was 2 nitrogens in the molecular formula so got 17.5%!
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    what did you get for that equation you had to write between potassium and chlorine reacting together making kcl3
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    Question 1:
    a) Z
    a) Period - Goes across, first row,forgotten letters.
    a)
    b) Same number of protons but different number of neutrons.
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    Unofficial MARK SCHEME for Chemistry C2 Edexcel GCSE:
    Question 1:
    a) Z
    a) Period - Goes across, first row,forgotten letters.
    a)
    b) Same number of protons but different number of neutrons.
    Question 2:
    Question 3:
    Question 4:
    Question 5:
    Question 6:
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    Unofficial MARK SCHEME for Chemistry C2 Edexcel GCSE:
    Question 1:
    1a) Z
    1a) Period - Goes across, first row,forgotten letters.
    1b) Same number of protons but different number of neutrons.
    Question 2:

    Question 3:


    Question 4:


    Question 5:

    Question 6:
    6a) Percentage Mass = 35% of Nitrogen (28x1/80 X100) (3 Marks)
    6b) Mass of a rection = 126.3 tonnes of Titanitum (48/190 X500) (2 Marks)
    6c) The yield was not durable or made at a suitable speed. (1 Mark)
    6d) Explain THE Crucible Experiment, or you could have explained about heating the two together and then use the empirical formula. (6 Marks)
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    ..
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    Please could you help me fill this in, in order to give you the unofficial mark scheme.
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    good luck
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    I hope 45-47 is an A for Chemistry and then 52 A* Biology
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    could you have said that it was expensive to get rid of the waste products for the manufacturer?
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    For 1a I belive there was 2 options, T, Z and X and then another triplet, can't seem to remember the letters.
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    What question was this
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    (Original post by macher-kriss)
    Sodium- Yellow Flame
    Barium Meal is safe despite being toxic because Barium is insoluble and therefore does not reach the bloodstream, etc.
    Dot and Cross diagram had 3 'Cl' circles joined to a 'P'. Each Cl shared one electron with the 'P' and you had to make sure each element had a full outer shell in the end.

    What question was this
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    is this the higher or foundation paper?
 
 
 
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