24 Oct, 07:03PM in sunny Singapore!

A level H2 Chemistry Past Year Practicals

Subscribe to A level H2 Chemistry Past Year Practicals 5 posts

Please Login or Signup to reply.
  • MapPwner's Avatar
    106 posts since Aug '15
    • Just asking,is it legal to obtain past year A level chemistry h2 practicals?If so where am i able to find them?Thanks

  • Moderator
    H2 Chemistry @ BedokFunland JC (near VJC & TJC)
    UltimaOnline's Avatar
    13,580 posts since May '05
    • Originally posted by MapPwner:

      Just asking,is it legal to obtain past year A level chemistry h2 practicals?If so where am i able to find them?Thanks


      You can't obtain past H2 Chemistry Practical Papers, because there are none (previous years have been using SPA) for school candidates. Although private candidates have taken Practical Papers, but these are not available to the public (ie. TYS publishers don't include them in TYS). You can ask your school teacher if they have these papers or can make them available to you, but don't count on it.

      The closest you can get, which will have to suffice, will be Cambridge UK or International A Level Chemistry Practical Papers, which you can download (illegally) from various websites on the internet.

  • MapPwner's Avatar
    106 posts since Aug '15
    • Ah i see,because it would be great if i could find some to practice.I did a chem lab test today and realised the whole prac can be interlinked(Stoichiometry with kinetics) with one another which can be confusing if one doesnt realise it.So yeah i ended up flunking my 2nd practical,kinetics which was linked to my 1st practical,stoichiometry of a common compound.

      The only A level prac i did before was a prac in the 2000s as a school lab test,something related to BrO3-,Br-,H+ in which different volumes of reactants must be mixed to determine the order of reaction and the end product forms some gel like thingy which solidifes and even changes colour over time.

       

    • Just asking a chemistry question that was part of my kinetics practical today for my lab test

      5C2O42- + 2MnO4- + 16H+ 10CO2 + 2Mn2+ + 8H2O

      For a particular 4 marks question whereby i am asked to calculate maximum volume of CO2(molar volume is 24dm^3 mol^-1)produced by 20cm^3 of FA1(ethanedioate ions),using amount of ethanedioate ions in 25cm^3 of FA1 answer as found in my first practical(which in this case i found it was 0.00126moles),how many marks will i lose it i forgot to take into account mole ratio between ethanedioate ion and CO2,resulting in my maximum volume found to be halved(around 24.9cm^3),instead of 49.8cm^3?Will i lose 1 or 2 mark?

  • Moderator
    H2 Chemistry @ BedokFunland JC (near VJC & TJC)
    UltimaOnline's Avatar
    13,580 posts since May '05
    • Originally posted by MapPwner:

      Just asking a chemistry question that was part of my kinetics practical today for my lab test

      5C2O42- + 2MnO4- + 16H+ 10CO2 + 2Mn2+ + 8H2O

      For a particular 4 marks question whereby i am asked to calculate maximum volume of CO2(molar volume is 24dm^3 mol^-1)produced by 20cm^3 of FA1(ethanedioate ions),using amount of ethanedioate ions in 25cm^3 of FA1 answer as found in my first practical(which in this case i found it was 0.00126moles),how many marks will i lose it i forgot to take into account mole ratio between ethanedioate ion and CO2,resulting in my maximum volume found to be halved(around 24.9cm^3),instead of 49.8cm^3?Will i lose 1 or 2 mark?


      Depends on how you present your answer (always give detailed working so Cambridge knows exactly where and how badly you've gone wrong), but when counting your own marks, always err on the side of caution, and assume you'll be penalized 2 marks.

Please Login or Signup to reply.