Results are out! Find what you need...fast. Get quick advice or join the chat
x

Unlock these great extras with your FREE membership

  • One-on-one advice about results day and Clearing
  • Free access to our personal statement wizard
  • Customise TSR to suit how you want to use it

OCR F321 January 13th 2012 Draft Mark Scheme

Announcements Posted on
Rate your uni — help us build a league table based on real student views 19-08-2015
  1. Offline

    ReputationRep:
    (Original post by elanor95)
    for the KI one at the start it said about the radioactive isotope, so I put it could contain that isotope?! is that a stupid answer? :')
    Not sure on that one, perhaps a teacher could confirm.
  2. Offline

    ReputationRep:
    (Original post by otrivine)
    Thanks would they accept hydrogen as weak van der waals cause they are present in everything?
    Again, not sure whether you had to put hydrogen bonds specifically, though you are correct.
  3. Offline

    ReputationRep:
    (Original post by inspiredideas)
    i think h20 is an open latice because they asked specifically about ice
    You could well be right, I am not 100% though.
  4. Offline

    ReputationRep:
    (Original post by Dan12)
    for 4c) the Mr of potassium is 39.1 not 39.2 so I think the answer is 72.00 cm3
    Good spot, corrected
  5. Offline

    ReputationRep:
    (Original post by james1234190)
    Again, not sure whether you had to put hydrogen bonds specifically, though you are correct.
    this paper was quite challenging there was lots of thinking needed cause hydrogen always has a high melting and boliling point? it says it in the ocr book as well?
  6. Offline

    ReputationRep:
    (Original post by otrivine)
    this paper was quite challenging there was lots of thinking needed cause hydrogen always has a high melting and boliling point? it says it in the ocr book as well?

    Hydrogen bonds are relatively strong compared to van der Waals and dipole - dipole intermolecular forces. Covalent / Ionic bonds are much, much stronger.
  7. Offline

    ReputationRep:
    [QUOTE=james1234190;35861606]Hydrogen bonds are relatively strong compared to van der Waals and dipole - dipole intermolecular forces. Covalent / Ionic bonds are much, much stronger.[/QUOTE

    BUT HOW LIKELY U THINK THEY WILL GIVE ME A MARK ON THAT? HOW DID U FIND THE EXAM
  8. Offline

    ReputationRep:
    Wouldn't it be 107 for the bond angle, not 107.5?
    Also, I don't think it's iodine is toxic - the question asked why do some countries use not use it, meaning that some still do so why would they if it were toxic?
    The question started off mentioning how we need potassium so maybe the answer was some have potassium ions in their drinking water so they wouldn't need it?
  9. Offline

    ReputationRep:
    (Original post by james1234190)
    Hydrogen bonds are relatively strong compared to van der Waals and dipole - dipole intermolecular forces. Covalent / Ionic bonds are much, much stronger.
    how likely will they give me a mark and how did iu find the exam
  10. Offline

    ReputationRep:
    in question 1 they want to know what Relative isotopic mass is not atomic!!!!!!!!1111
  11. Offline

    ReputationRep:
    (Original post by alizasauras)
    Thank you for doing this

    p.s I did dreadfully poor
    Are you sure? Sometimes it seems worse then it is, and the markschemes can be anything from ridiculously strict to ridiculously allowing.
    It was a hard exam.
  12. Offline

    ReputationRep:
    i think i flopped it aswelll lost probably 40 marks if not more
  13. Offline

    ReputationRep:
    I hope the grade boundaries go down
  14. Offline

    ReputationRep:
    every jan its about 44-46 hope this jan it will be around 38-42
  15. Offline

    ReputationRep:
    (Original post by kiko95)
    every jan its about 44-46 hope this jan it will be around 38-42
    Lets hope so!
  16. Offline

    ReputationRep:
    (Original post by kiko95)
    in question 1 they want to know what Relative isotopic mass is not atomic!!!!!!!!1111
    Thanks I was meant to say 'atom of an isotope' not just an atom
  17. Offline

    ReputationRep:
    (Original post by otrivine)

    BUT HOW LIKELY U THINK THEY WILL GIVE ME A MARK ON THAT? HOW DID U FIND THE EXAM
    I am not an examiner, marker or even a teacher so I cannot possibly say I am afraid. I found the exam challenging, but was fairly happy with how it went overall knowing that I nailed a few of the longer questions.
  18. Offline

    ReputationRep:
    (Original post by alizasauras)
    Thank you for doing this

    p.s I did dreadfully poor
    No problem, I am sure you did better than you think
  19. Offline

    ReputationRep:
    (Original post by james1234190)
    I am not an examiner, marker or even a teacher so I cannot possibly say I am afraid.
    thanks how did u find the exam they say boundaries hopefully between 38-42 true?
  20. Offline

    ReputationRep:
    (Original post by otrivine)
    thanks how did u find the exam they say boundaries hopefully between 38-42 true?
    See my post, I updated Not sure on boundaries.

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: December 28, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR

Win a mini-fridge

Don't miss our Freshers competition!

Poll
Do you prefer exams or coursework?
x

Looking for some help?

Ask our friendly student community a question

Ask a question now

Or get help from our smart tools and guides

GCSE help A-level help Uni application help Everything else
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.