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  1. L

    AS Chemistry P2 Prep.

    http://www.chemguide.co.uk/inorganic/extraction/copper.html Scroll down to the purification part. Also, you can use google too. :P
  2. L

    AS Chemistry P2 Prep.

    No, but you need to know its reaction with aldehydes/ketones.
  3. L

    Chemistry: Post your doubts here!

    Awesome. Thank you so much. ^^
  4. L

    Chem P2 any guesses ?????

    Here's my guess paper: 1. One question on moles. 2. Two questions related to inorganic/physical chemistry. 3. Last 2 questions on organic. :eek: In all seriousness though, I don't think any guess paper will be accurate. Be prepared for every chapter because anything could come.
  5. L

    Chemistry: Post your doubts here!

    Haha, yes. http://www.scribd.com/doc/37574186/9701-w01-qp-2 Nov 01, Q4 (c) (i) & (ii) and part (d) What are the answers?
  6. L

    ~~jokes?? in here?? really??

    LOL, that was hilarious.
  7. L

    PAPERS THIS TIME WOULD BE TOUGHER THAN PREVIOUS ONE'S!!!

    Honestly.. I think this is actually better. Now instead of the CIE giving out hundreds of As and A*s to several students, they can now distinguish between the best candidates, the good candidates and the other candidates. Although yeah, ultimately that means we have to work harder. I wonder if...
  8. L

    Chemistry: Post your doubts here!

    Thanks, I get it now. Drawing the displayed formula of the aldehyde reaction to make T really did help. Still, I think this is a pretty tricky question. :P
  9. L

    Chemistry: Post your doubts here!

    o_o But how are we supposed to figure this out? I am still kind of confused.. even after looking at step I again and again..
  10. L

    Chemistry: Post your doubts here!

    http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20%289701%29/9701_s09_qp_2.pdf Question 5 part (f) How do we draw the structure of S?
  11. L

    Chemistry: Post your doubts here!

    NO is first formed in the car engine, and then it reacts with 1/2 mole of oxygen in the air to form NO2.
  12. L

    Chemistry: Post your doubts here!

    To add on, how does one identify as the grey/green residue in part (iii)?
  13. L

    Chemistry: Post your doubts here!

    It forms a double bond with both..
  14. L

    Chemistry: Post your doubts here!

    Actually, sulfur forms a double bond. In double bond, you add 2 electrons (as opposed to adding 1 in a single bond, I forgot to mention that sorry). So sulfur has 6, each oxygen has 2 making a total of 10 electrons. Now, in each double bond, 4 electrons will be used leaving 2 behind. These 2...
  15. L

    Chemistry: Post your doubts here!

    Nope, it only has 1. The oxygen's have 2 lone pairs, but sulfur has only 1.
  16. L

    Computer studies ! Post your doubts here =)

    Check the booklet, the differences are written there somewhere. I don't remember most of them off the top of my head. :P
  17. L

    Chemistry: Post your doubts here!

    You are right.. I made a mistake there. I changed it to SO2.
  18. L

    Computer studies ! Post your doubts here =)

    No I think that's a good definition. Make sure you know a few differences between Intranet and Internet also.
  19. L

    Computer studies ! Post your doubts here =)

    They said state the tasks done in those questions... and even in the marking schemes they used 1 word answers to those parts. If they said explain, they you can just say something like "The OS is responsible for handling file-related tasks like copying files" etc.
  20. L

    Computer studies ! Post your doubts here =)

    Yes. I noticed that (at the time I was studying) many questions in the papers could easily be answered if you studied the booklets. And it's great that you got full in the project, I think about 60-65 in P1 should get you an A*. :)
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