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  1. N

    Chemistry Unit1 2012

    when does it come? :p
  2. N

    Chemistry Unit1 2012

    and that question about enthalpy! why is it incorrect? i wrote about balancing and i guess the answer was vaporisation?
  3. N

    Chemistry Unit1 2012

    the multiple choice was so tricky I felt like i didnt do well! cant we discuss our answers?
  4. N

    Biology doubts..post here.. :D

    oh thanks that was helpful and y'all try www.chemactive.com it helps alot
  5. N

    Biology doubts..post here.. :D

    suggest a reason why NaCl vapour is regarded as a collection of ion pairs rather than as NaCl molecules? please help me :) do you have question sources? the past papers arent enough for chem
  6. N

    Chemistry Unit1 2012

    oh me too i have a questionnn it says suggest a reason why NaCl vapour is regarded as a collection of ion pairs rather than as NaCl molecules?
  7. N

    Biology doubts..post here.. :D

    i agree!
  8. N

    Biology doubts..post here.. :D

    the chem?
  9. N

    Biology doubts..post here.. :D

    i felt it was really lengthy and the experiment was so difficult am not sure of my answers and the one about the calculation for the thickness ?! god it wasnt good for me ..
  10. N

    Chemistry Unit1 2012

    Lets discuss our questions regarding chemistry when do you guys have the exam tomorrow?
  11. N

    Biology doubts..post here.. :D

    did anyone do it? and when do you have the chemistry tomorrow?
  12. N

    Biology doubts..post here.. :D

    for marking schemes go to www.edexcel.com then qualifications GCE from 2008 biology marking schemes and choose the year :) no i have it at 11:oo am
  13. N

    Biology doubts..post here.. :D

    it was for 5 marks and alot of points were needed like the solubility of the enzyme and its globular shape and so on .. i dunno:s thank you again
  14. N

    Biology doubts..post here.. :D

    THANKS ALL how does the primary structure affect the function of an enzyme and its 3D stucture? please mye xam is tmrw morningg
  15. N

    Biology doubts..post here.. :D

    hello, can anyone explain the dif between prenatal screening and genetic screening? and how do we treat Cystic fibrosis?
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