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    i guess so. ^

    ah...this paper was so easy but i messed up neway...urgh
    can anyone confirm this...i no someone sed it before....i put nitrogen was also present before ...is that right?

    also...the repeating pattern for the polypropene....what did u guys do for that?? i 4got it completely. organic chem....ah...
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    What did you guys write for the question about poly(propene)? At first I thought, propene is unsaturated, so it must decolourise bromine water, right? But after the exam, i realised that it's no longer unsaturated, since there are no more double bonds!
    Oh bummers...
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    God I think by reading this I really ballsed it up, this is not good.
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    (Original post by Krystal)
    i guess so. ^

    ah...this paper was so easy but i messed up neway...urgh
    can anyone confirm this...i no someone sed it before....i put nitrogen was also present before ...is that right?

    also...the repeating pattern for the polypropene....what did u guys do for that?? i 4got it completely. organic chem....ah...
    I just realised that the structure for Polypropene asked for all bonds. I wrote it like this:

    CH3 H
    | |
    -C--C-
    | |
    H H

    Is this wrong? As it doesnt show all bonds?
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    i couldnt think of two ways in which C02 is given out into the atmosphere. i just put breathing and respiration. i wouldnt get that would i? and the one about how C02 in the atmosphere is reduced by natural processes i just put phoosynthesis but i annoyingly could not think of another one.
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    (Original post by Frosty3001)
    I just realised that the structure for Polypropene asked for all bonds. I wrote it like this:

    CH3 H
    | |
    -C--C-
    | |
    H H

    Is this wrong? As it doesnt show all bonds?
    yeah i think thats wrong, you needed to write it:
    H
    |
    H-C-H H
    | |
    -C--C-
    | |
    H H



    yesboss..." i couldnt think of two ways in which C02 is given out into the atmosphere. i just put breathing and respiration. i wouldnt get that would i? and the one about how C02 in the atmosphere is reduced by natural processes i just put phoosynthesis but i annoyingly could not think of another one."

    CO2 is lost by photosynthesis and it is dissolved in the oceans
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    I just put

    | | |
    - c - c - c -
    | | |

    with brackets, please tell me I will get something.
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    (Original post by RJB)
    also for the reacting masses questions, im getting into a heated debate with a few of my mates that say the answer was '65g' as there were 2 moles ICl..... i put 32.5g

    who is correct?
    You are, i'm sure of it.

    And as for the polypropene, wouldn't it be this:

    http://img45.imageshack.us/my.php?image=dodgy6sp.jpg

    (Excuse the rubbishness, mousepad was used)
    Is that right? I think so..
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    (Original post by JayG99)
    You are, i'm sure of it.

    And as for the polypropene, wouldn't it be this:

    http://img45.imageshack.us/my.php?image=dodgy6sp.jpg

    (Excuse the rubbishness, mousepad was used)
    Is that right? I think so..
    Jay, thats exactly what I wrote...though it did say "show all bonds" so maybe I'll only get 1 mark? What did you do?
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    No it wouldn't be. You had to show the bonds on the CH3 as well.
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    This is what I did. Is it ok?
    Attached Images
     
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    (Original post by DeathAwaitsU)
    No it wouldn't be. You had to show the bonds on the CH3 as well.
    Never came across that before..oh well I think it's good for 1 mark.
    Man i lack common sense so much..i was wondering why we got so much space for the question :p:
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    (Original post by Starsurfer)
    This is what I did. Is it ok?
    I put this with the brackets (..see..attachment...)n
    Attached Images
     
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    I did the same question in a past paper, and it said it would accept it if you just put CH3 rather than showing all the bonds. And you don't even need to put the brackets and the n either.
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    (Original post by RJB)
    dont think so... i think they were looking for an alkali metal hydroxide like sodium hydroxide (my answer)

    what did people get for the water test? blue to pink? pink to blue?
    was the reacting by masses question, 32.5g?
    yield decreases with inc. temp
    RAM Boron = 10.803 yes?
    genius! i got exactly that for everything i wrote blue to pink, complete guess.. at least it was vaguely right!
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    (Original post by xemmajanex)
    I did the same question in a past paper, and it said it would accept it if you just put CH3 rather than showing all the bonds. And you don't even need to put the brackets and the n either.
    you dont have to put brackets but u gotta show that u understand that the bonds for carbon on 1 side are left open
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    So it is ok to right just CH3 after all?
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    no, i dont think so... thats not showing all bonds..
    personally i got taught to never just put CH3 in simple drawings for GCSE, but i do know sum ppl are taught that
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    The GCSEs are geared up to help people pass them, which is why if it says to give a word equation for something, they still accept it if you give a symbol equation instead. They do accept it if you just put CH3 (at least, they did in the 2005 paper I think), and when it says to put all the bonds, it means putting the open bonds on the 2 Cs in the middle (does that make sense?)
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    (Original post by xemmajanex)
    The GCSEs are geared up to help people pass them, which is why if it says to give a word equation for something, they still accept it if you give a symbol equation instead. They do accept it if you just put CH3 (at least, they did in the 2005 paper I think), and when it says to put all the bonds, it means putting the open bonds on the 2 Cs in the middle (does that make sense?)
    Yeah I see what you mean emma: like this

    -C-C-

    ^^ Thats what's most important, right? I was pretty sure that CH3 was always acceptable...
 
 
 

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