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Edexcel IAL, Unit 5: Transition Metals and Organic Nitrogen Chemistry. 22-Jun-2016 Watch

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    (Original post by nimesh007)
    i got 1.83 n 1.98
    Same!
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    Thank God, it was easier than January 2016, I was so worried about that, however, I think it's one of those papers who has some tricky questions that you don't know you have fallen into!! The annoying part is that the grade boundaries gonna be high

    And what was the answer for the diamond and graphite question, how I am going the remember that from O-level
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    (Original post by PlayerBB)
    Thank God, it was easier than January 2016, I was so worried about that, however, I think it's one of those papers who has some tricky questions that you don't know you have fallen into!! The annoying part is that the grade boundaries gonna be high

    And what was the answer for the diamond and graphite question, how I am going the remember that from O-level
    I wrote some nonsense about covalent bonds in diamond being stronger than the elctrostatic forces of attraction in graphite. I didn't what what to write for 3 freaking marks
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    Can anyone explain how the question to calculate masses of the Fe2+ and Fe3+ ions is done?
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    i said graphite: one carbon bonded to three carbon atoms and it has a structure of layers stacking together by electrostatic force(not sure if it's electrostatic)
    diamond: one carbon atom bonded to 4 carbon atoms and it's a giant lattice structure
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    Both diamond and graphite have giant covalent structure ^^

    I mentioned Van der Waal's forces between layers in graphite
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    (Original post by Blazyy)
    I wrote some nonsense about covalent bonds in diamond being stronger than the elctrostatic forces of attraction in graphite. I didn't what what to write for 3 freaking marks
    Same!!!! I totally forgot what their structures look like

    I just wrote Diamond has a giant molecular structure while graphite has a simly molecular structure (I know it's wrong ugh)

    And that the intermolecular forces between Diamond are much stronger than in between Graphite so higher energy is needed to overcome the bonds in Diamond than in Graphite
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    Do you think the grade boundaries would be set at 80 for A*
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    Hi guys! So what do you think about the grade boundaries of A*? 😕
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    Boundaries for A*
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    (Original post by majidabdul)
    Do you think the grade boundaries would be set at 80 for A*
    That's impossible! They weren't that high for unit 4 with similar difficulty

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    (Original post by PlayerBB)
    That's impossible! They weren't that high for unit 4 with similar difficulty

    Posted from TSR Mobile

    It was 80 for Unit 4 IAL January.

    However, I believe it will go up no more than 75 for A*.
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    (Original post by Rasudana)
    Hi guys! So what do you think about the grade boundaries of A*? 😕

    Don't worry you will get an A*.

    The boundary for C34 was 115 but you managed to get A* so....
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    The question was about the strength of diamond and graphite, not the melting point :| so you can't really explain it using intermolecular attractions fully
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    (Original post by majidabdul)
    What do u think will be threshold for A*
    Something like 80
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    (Original post by RizK)
    The question was about the strength of diamond and graphite, not the melting point :| so you can't really explain it using intermolecular attractions fully
    So what did you write?
    I wrote something like more london forces in diamond (idk why xD)
    diamond- tetrahedral and graphite- trigonal planar
    and 3 c-h bonds in graphite and 4 in diamond!
    Is anything okay? :/
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    (Original post by Aimen.)
    So what did you write?
    I wrote something like more london forces in diamond (idk why xD)
    diamond- tetrahedral and graphite- trigonal planar
    and 3 c-h bonds in graphite and 4 in diamond!
    Is anything okay? :/
    yes, the tetrahedral structure and the 4 bonds is correct
    You should have mentioned the layers in graphite vs the rigid structure of diamond i think
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    (Original post by RizK)
    The question was about the strength of diamond and graphite, not the melting point :| so you can't really explain it using intermolecular attractions fully
    huthi ge putha... moko wenne lol
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    (Original post by RizK)
    yes, the tetrahedral structure and the 4 bonds is correct
    You should have mentioned the layers in graphite vs the rigid structure of diamond i think
    ah ow
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    (Original post by Geethan)
    huthi ge putha... moko wenne lol
    Paper eka lesi eth kela wela inne huttho
 
 
 
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