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#chemistry

  1. jeonjaykay

    PHYSICS AND CHEMISTRY

    Hello pls I have simple question that has been confusing me for a while about PHYSICS AND CHEMISTRY. In marking scheme the answer is sometimes rounded off to one dp or two sig figures, we were always told to round off to three sig figures..now which sig fig/dp should I round off??
    • jeonjaykay
    • Thread
    • #chemistry #gce #olevelchat #physics
    • Replies: 1
    • Forum: Chat
  2. B

    End of Chapter Questions/Answers

    Where can I find the end of chapter solutions from Cambridge International AS and A Level Chemistry Coursebook? 2nd edition Anyone
  3. A

    Chemistry P34?

    Has anyone got any clue about paper 34,predictions or literally anything..Please let me know I messed up my p2,and being a private student,I couldn't practice p3 much
    • Agestone
    • Thread
    • #chemistry 9701 as & a level cie paper34 practical predictions
    • Replies: 2
    • Forum: A-Levels
  4. M

    IGCSE Chemistry O/N/2017 Paper 42. Easy or Hard??

    WTF was this exam... Please if someone has done it, share your thoughts and experience.
  5. furuta

    PLEASE HELP ME!!! Repeating chemistry !!!

    helloo so im thinking about repeating chemistry bc I got a C in it. (AS). I missed my B by one mark. Is it possible to up my grade to a B without repeating ? Because I’m very stressed about how I’ll manage to repeat when I have A2 to study too, for chem, physics and bio. Please guide me ): thank...
    • furuta
    • Thread
    • #alevels #chemistry #help #repeating
    • Replies: 5
    • Forum: A-Levels
  6. S

    Chem 9710 paper 33 help

    Hey Guys, So my practical test is in 20 days and I have never actually done a chemistry practical due to a very lazy teacher :( So any advice on how to pass and maybe get above a B, how to approach the questions and calculations will be very appreciated. I am actualy very worried about this and...
    • Saaraah
    • Thread
    • #9701 #as #aslevel #aslevelchemistry #chemistry #cie #cie9701 #ciechemistry #help #practicals
    • Replies: 5
    • Forum: A-Levels
  7. A

    Have some doubts about mole calculations. Help a brother out. Anyone?

    (a) an aq. Solution of hydrogen peroxide H2O2 decomposes in the presence of a catalyst According to the equation. 2H2O2 (aq)=> 2H2O (l) + O2 (g) i)calculate the number of moles of H2O2 required to produce 10dm3 of oxygen gas measured at room temperature and pressure.? ii)the number of moles...
    • Asaqewx
    • Thread
    • #calculations #chemistry #mole #titration
    • Replies: 0
    • Forum: A-Levels
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