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OCR AS - Chemistry Unit F322 - Chains, energy and resource - REVISION! watch

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    what was the answer to the atom economy question
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    (Original post by Kir4nK)
    what was the answer to the atom economy question
    how many marks do you think you have got
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    (Original post by Kir4nK)
    what was the answer to the atom economy question
    molecular mass of desired product/molecular mass of all products x 100
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    (Original post by king1234)
    how many marks do you think you have got
    for that question ?
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    (Original post by kimmey)
    molecular mass of desired product/molecular mass of all products x 100
    ok i got tht phew
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    (Original post by Kir4nK)
    for that question ?
    overall do you think you ahve done good lol
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    for the question on atom economy or yield
    i thought hard about this
    and forgot the book description..so i thought
    yeild is more important ..because u want more product ..
    thats the most important thing..
    with atom economy fair enuf u get by products bt u can find ways to get rid of them safely..
    anyone agree?
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    (Original post by shooby_doo)
    What did you do on the question for international awareness of incineration of plastics?
    I can't really remember but i think i said to try and recycle the waste products???? What did you put?
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    for the last question I've drawn out the structure of the alcohol, carboxylic acid and the ester but I didn't put down their names... Do people think I would have lost a mark for not naming them?
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    (Original post by gwengwen)
    for the last question I've drawn out the structure of the alcohol, carboxylic acid and the ester but I didn't put down their names... Do people think I would have lost a mark for not naming them?
    If they said name them then yes probably
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    (Original post by Peanut)
    If they said name them then yes probably
    I was in hurry when i was doing the last question so I didn't read the question properly... I thought I've done quite well until I saw other people discussion and I think I've already lost 10 marks ... all silly mistakes !
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    (Original post by gwengwen)
    I was in hurry when i was doing the last question so I didn't read the question properly... I thought I've done quite well until I saw other people discussion and I think I've already lost 10 marks ... all silly mistakes !
    Well only 10 marks wouldn't be terrible. Still a bloody good A
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    (Original post by Peanut)
    Well only 10 marks wouldn't be terrible. Still a bloody good A
    I might have lost more marks... anyway the grade boundary will be quite high as everyone is saying
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    (Original post by gwengwen)
    I might have lost more marks... anyway the grade boundary will be quite high as everyone is saying
    high i think they will be lower
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    (Original post by king1234)
    high i think they will be lower
    I think this paper is the hardest paper out of all papers I've done... So I hope the boundary will be low low low !!!
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    (Original post by gwengwen)
    I think this paper is the hardest paper out of all papers I've done... So I hope the boundary will be low low low !!!
    same in june 2010 got 78 think ihave probz got about 65 in this paper lol harder paper deffo
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    (Original post by king1234)
    same in june 2010 got 78 think ihave probz got about 65 in this paper lol harder paper deffo
    June 10 was alright.... i think....
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    (Original post by Peanut)
    I can't really remember but i think i said to try and recycle the waste products???? What did you put?
    I Blabbed how it should be a global effort to cut down on the inceration of plastics so that everyone plays their part in cutting down the production of green house gases etc
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    (Original post by king1234)
    same in june 2010 got 78 think ihave probz got about 65 in this paper lol harder paper deffo
    do you remember the question about when u had to say bond making releases energy and bond breaking absorbs energy. did it ask u to say it in terms of an endothermic reaction or exothermic reaction cheers
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    (Original post by kimmey)
    do you remember the question about when u had to say bond making releases energy and bond breaking absorbs energy. did it ask u to say it in terms of an endothermic reaction or exothermic reaction cheers
    all i mentioned in that one was bond breaking is endo bond making is exo more energy needed to form bonds to break them something along those lines cant rember fully
 
 
 
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