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  1. J

    Chemistry: Post your doubts here!

    Panda, did the marking scheme or question ever suggest the PLACEMENT of the OH being specific??
  2. J

    Chemistry: Post your doubts here!

    Be isnt a part of period 3 :p but as far as my opinion goes, i believe it would not react with oxygen or H20 as reactivity decreases going up group 2, and since Mg already has such a slow reaction, then the chances of Be reacting are minimal! Btw, if i helped anyone here, i do request that you...
  3. J

    Chemistry: Post your doubts here!

    Im pretty sure the majority of xtreme speaks urdu. :P And I believe for chirality or isomeric compounds the examiner says ANY may be accepted, as long as they are reasonably possible to make or exist at all.
  4. J

    Chemistry: Post your doubts here!

    Oh yeah and besides that, they get lower in reactivity going across the group with Cl.
  5. J

    Chemistry: Post your doubts here!

    Theres also nuecleophilic substitution. And Alice: All period 3 elements react with Oxygen [except argon, ofcourse] They form oxides and burn with varying flame colors [White for MG/AL, blue for sulphur, yellow for phosphorous etc] The oxide formula depends on their valency and some exist...
  6. J

    Chemistry: Post your doubts here!

    AFAIK, Partition coefficient is A2 material [Chromatography, ugh!] And thus will not be coming in tomorrows paper. Besides that, I'd rather have refreshed it in my mind before relating it to you, but in summary, it is the degree to which something gives preference to one solvent over another...
  7. J

    Chemistry: Post your doubts here!

    Ty daredevil, btw im appearing from Lahore too :D And Ahmedraza, half equations show participants of the reaction removing spectator ions: e.g: CUS04 + ZN -> ZNSO4 + Cu. as SO4 anion remains constant and doesnt change in oxidation state it simply becomes Cu2+ + Zn-> Zn2+ + Cu. I didnt...
  8. J

    Chemistry: Post your doubts here!

    Electrophilic substitution occurs only in Benzene and Aryl compounds as far as i know, which only appear in A2. And sure Alice np, just lemme finish my read-through of the book and i'll share 'em :)
  9. J

    Chemistry: Post your doubts here!

    Yes boss.
  10. J

    Chemistry: Post your doubts here!

    I'll only be discussing P2 btw, since tomorrow its P2 only, P4 etc will be dealt with...later :P
  11. J

    Chemistry: Post your doubts here!

    Ahahaha :P well saari ka to pata nahi but anyway what i understood from Organic and nitrogen and sulphur: Nitrogen and Sulphur: N2 is highly unreactive due to N-N triple bond N reads with O to give NO in car exhausts due to high heat, further oxidised to NO2 by air, mixes with H20 in rain to...
  12. J

    Chemistry: Post your doubts here!

    anytime! please do feel free to ask me for any other summaries, it helps my revision also, and feel free to contribute :P
  13. J

    Chemistry: Post your doubts here!

    I dont really remember who said it but if it wasnt answered a brief summary of the inorganic chapters is: group 2 forms 2+ ions, their formulae always ends in [X] s2 [2 electrons in S-subshell] Their nitrates and carbonates get harder to decompose going down the group, as the polarising power...
  14. J

    As English

    P2 is on the day of P2 physics as well :) And ok! Good luck :D
  15. J

    As English

    Lucky you! i have a clash with Bio and physics for mine :( Oh well. And yeah we should discuss a P1 sample here, since P2 is dependant completely on the persons own vocabulary and imagination i think!
  16. J

    As English

    same :D maybe we should discuss our techniques here?? I got A* In O levels english and frankly i dont see much difference in A1 english language from O level :s
  17. J

    Need some help

    Bump. Anyone??
  18. J

    Need some help

    Also, if someone could link me to some helpful notes on P5 for biology, and p3 for physics and biology, that would be really nice :)
  19. J

    Need some help

    Hey guys I was just going through the xtremepapers past papers compilation when i came upon these: http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Biology%20%289700%29/11_9700_13_RP_AFP_Revised.pdf What are these papers? What does the code "RP_AFP" And...
  20. J

    Hey. I just wanted to check up and ask where you got into? Its just your post on MCAT...

    Hey. I just wanted to check up and ask where you got into? Its just your post on MCAT Equivilence got me thinking and since we know your score it could kind of be a platform to know everything else. I do believe you're in KE though? [I saw an "Anwar" from Lahore district on the merit list :P]
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