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  1. ZainH

    Physics, Chemistry and Biology: Post your doubts here!

    I DO. Paper : http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_S08_qp_6.pdf Question 5)f) I wrote that it contains copper, but how can we tell it's an organic salt? (I'm very bad at chemistry, just saying :S )
  2. ZainH

    Chemistry Test of Ions

    DUUDE, SOLVE ALL. Since you don't have much time anymore start from 2006.. question in paper 6 are usually repeated just with slight changes. Also check the mark scheme to make sure your answers match . Beleive me , the more you solve the better you'll get.
  3. ZainH

    Chemistry Test of Ions

    Chromatography: The sepeartion of a mixture of substances using filter paper and a solvent. Fractional distillation: Sepeartion of liquids with different boiling points. Titration: A method for basically finding the amount of a substance in a solution. Don't learn there defintions, paper 6 is...
  4. ZainH

    Bio Paper 3 Variant 1

    Lol relax, I messed up that as well. 2 marks big whoooop. The paper wasn't easy so grade thresholds will be low, you should be able to lose around 15-20 marks and still get an A*
  5. ZainH

    Bio Paper 3 Variant 1

    LOL falluda memory xD Yeah for that I just wrote effects of deforestation such as soil erosion, climate changes, destruction of animal habitats which could lead the to extinction of species. Some people in my class added that since only a small space of land would be left, all the animals would...
  6. ZainH

    Bio Paper 3 Variant 1

    Cortex? Why does that sound familiar..
  7. ZainH

    Bio Paper 3 Variant 1

    Mycellium/Hypha/Aerial hypha will all be accepted. Im pretty sure. When did I tell you that :S? But yeah I am pretty screwed, but doing alot of pastpapers and getting better at them .. I'm feeling more confident now! x) In reply to your question about the one about deforestation.. could you...
  8. ZainH

    Chemistry Test of Ions

    All right man, good night and thanks for the hundredth time.. You don't understand how much you've helped me.. I would've gotten around a C if it wasn't for you! Good luck with your exam tomorrow!
  9. ZainH

    Bio Paper 3 Variant 1

    LOL, I doubt it.. a resevoir is a where water is store. But the seed stores enzymes and other things as well, not only water. Relax, it was one mark x) How do you know I'm in trouble lol?
  10. ZainH

    Chemistry Test of Ions

    All right thanks, and another small question. When plotting points on a graph for say the reaction of a catalyst from data on a table, if at 0 seconds the volume of oxygen produced is 0, should I also plot this on the graph? Or leave it?
  11. ZainH

    Chemistry Test of Ions

    Paper :http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_s07_qp_6.pdf This is the mark scheme, just go to question 5)h) The question itself says what conclusions can you draw about salt E? I get the answer, just need a good way to write it.
  12. ZainH

    Bio Paper 3 Variant 1

    Thing is I don't remember exactly , sorry. (There were so many labeling questions with letters.. forgot em all :x)
  13. ZainH

    Bio Paper 3 Variant 1

    Oh don't ask.. Im pretty sure I got those 2 wrong as well. Lost 2 marks there, 2 marks from the seed question, 1 mark from the anti-body question ( I think), 1 mark from the nutrients absorbed question.. These are the ones that are confirmed haha, 6 marks.. But there probably more so around 10...
  14. ZainH

    Bio Paper 3 Variant 1

    It should be more then an A bro, threshold was 50/80 for an A last year.. somewhere around that. The only way you'll get an A is if you lost 30 MARKS! Do you really think you lost that many marks? .. I lost around 8.. so hopefully A* (InshAllah)
  15. ZainH

    Bio Paper 3 Variant 1

    Im positive lol, because I wrote for the one inside "Embryo" and the one outside pumule xD
  16. ZainH

    Bio Paper 3 Variant 1

    I'll tell you what I wrote, it doesn't mean that these are the CORRECT answers. 1)One inside was pumule, outside was radicle.. I got that wrong :s 2)BY looking at there DNA we can observe the different genese present, and compare them. 3)It's okay if you messed up an example, I didn't even use...
  17. ZainH

    Chemistry Test of Ions

    Well your explanation helped in the way that I went back and looked at my answer, noticed that was straight forward x) But thanks anyways, prepare yourself for MOREEE questions.
  18. ZainH

    Chemistry Test of Ions

    Wow your answers make me feel like an idiot. So simple! Thanks again.. for the 10th time. Just a small question, if in 2 experiments HCL is used. One has double the volume of HCL, what could be the reason Would you need more HCL if something is more concentrated or less concentrated? Im confused...
  19. ZainH

    Chemistry Test of Ions

    http://www.xtremepapers.com/papers/CIE/Cambridge%20IGCSE/Chemistry%20(0620)/0620_s04_qp_6.pdf Q8)
  20. ZainH

    Bio Paper 3 Variant 1

    Well mycelium is a network of hypha... can't guarentee you the mark but theres a chance you might get it.
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