Join TSR now and get all your revision questions answeredSign up now
    Offline

    6
    ReputationRep:
    (Original post by zhang-liao)
    University of London Taster Courses
    http://www.london.ac.uk/TASTERS
    Thanks! It looks really good but I can't find any info on stem ones?

    Posted from TSR Mobile
    Offline

    2
    ReputationRep:
    (Original post by noshahmad)
    Lol please. I haven't even begun revising yet. I hope to start tomorrow I've been putting it off.

    I'm excited for year 13, I can finally drop Economics which I detest but I don't want to find next year really difficult, its reassuring its not too bad though

    Posted from TSR Mobile
    haha, I have done a good few hours, these days averaging 4-5 hours, hopefully keeping the flow going throughout the year and upping the wattage when it gets close to the exam.

    It won't be hard if you put the effort it, that's pretty much it.
    Also make sure you use the right books, for the courses. I used, for psychology, the CGP which really wasn't all that good and managed to get a B, but maybe if I used the official one with a lot more info, It would have gotten me a better grade( and the fact that I should have revised more!).

    Just keep that in mind, cause you don't want to end up skipping important stuff!
    Offline

    6
    ReputationRep:
    (Original post by noshahmad)

    I hope to apply for Chemistry, although I wouldn't mind biology either so I'll try and accomadate both in my PS

    Posted from TSR Mobile
    Man I forgot I have to gear it towards several subjects -_- mty back ups are biology and physics and maths so I'm not sure how this will work out :angry: I just equally enjoy each
    If we're both doing one with chemistry in mind we could probably help each other out
    Posted from TSR Mobile
    Offline

    5
    ReputationRep:
    (Original post by TheNoobishKnight)
    haha, I have done a good few hours, these days averaging 4-5 hours, hopefully keeping the flow going throughout the year and upping the wattage when it gets close to the exam.

    It won't be hard if you put the effort it, that's pretty much it.
    Also make sure you use the right books, for the courses. I used, for psychology, the CGP which really wasn't all that good and managed to get a B, but maybe if I used the official one with a lot more info, It would have gotten me a better grade( and the fact that I should have revised more!).

    Just keep that in mind, cause you don't want to end up skipping important stuff!
    Yeah I've bought the revision guides for all my subjects and they help so much. I use them more than the textbook but refer to it in case I missed a point but I cross check with my spec.

    Yeah hopefully I'll average in 5 hours until school open. Ideally want to have learnt the course by Feb half term so I can spend the rest of the time revising/doing past papers but I know thats a real stretch, good luck!

    Posted from TSR Mobile
    Offline

    5
    ReputationRep:
    (Original post by lyricalvibe)
    Man I forgot I have to gear it towards several subjects -_- mty back ups are biology and physics and maths so I'm not sure how this will work out :angry: I just equally enjoy each
    If we're both doing one with chemistry in mind we could probably help each other out
    Posted from TSR Mobile
    Doing all 4 will be difficult. I guess they do all compliment each other so you can talk about it vaguely but still having some sort of focus. I just checked and it said the deadline is in March for those in London?

    Posted from TSR Mobile
    Offline

    17
    ReputationRep:
    Sorry if this question's already been asked. Does anyone know the dates of the Chemistry exam, OCR A?
    • Welcome Squad
    Offline

    3
    ReputationRep:
    (Original post by lyricalvibe)
    Thanks! It looks really good but I can't find any info on stem ones?

    Posted from TSR Mobile
    Sorry bout the late reply, went to sleep

    They open all their taster courses on the 11th of January I believe
    Offline

    1
    ReputationRep:
    (Original post by HAnwar)
    Sorry if this question's already been asked. Does anyone know the dates of the Chemistry exam, OCR A?
    First one's on Atoms Bonds and Groups on the 22nd May, Second- Chains, Energy and Resources on the 2nd June
    Offline

    1
    ReputationRep:
    I'm doing aqa! Such a good idea
    Offline

    2
    ReputationRep:
    (Original post by Dinaa)
    Hello AS Chemistry TSRians!

    I thought it would be a good idea to make a thread, where students doing AS Chemistry, post/ask questions, and we could all help each other out?

    Teaching another person, also helps you become more confident and you both develop a better understanding. I know there is an A-level chat thread already, but this should be for learning!

    There is no such thing as a silly question, so ask away and hopefully, you'll find someone who can help you

    I shall also make a list of the Chemistry students, and what exam board they're all on! So please post what exam board you are on, if you are in!

    List of the students doing Chemistry!

    Spoiler:
    Show





































    Lovely helpers!

    Spoiler:
    Show







    I apologize if I've missed anyone out, got the list from Current year 12 list! (Lazy i know) :mmm:

    P.S- If you don't want to, okay, you are not obliged to do so! But please, no rude/offensive comments

    :elefant::elefant::elefant::elefant::elefant::elefant::elefant::elefant::elefant::elefant:
    Hiiii, can you please add me as well?:cute: I'm on Edexcel
    Offline

    1
    ReputationRep:
    Sorry if this has been asked but it's a question I have been struggling on for a while. I think I know how to do it as I have tried to self teach but I'm wondering what methods other people use to see if they make more sense.

    How do you work out % yield?
    • Welcome Squad
    Offline

    3
    ReputationRep:
    (Original post by Charlblackburn)
    Sorry if this has been asked but it's a question I have been struggling on for a while. I think I know how to do it as I have tried to self teach but I'm wondering what methods other people use to see if they make more sense.

    How do you work out % yield?
    (Actual Yield/Theoretical Yield) x 100% = % yield

    Edexcel provide the actual yield however sometimes expect you to calculate the theoretical yield, don't know about OCR or AQA

    To calculate the theoretical yield you can calculate the mass calculated using molar calculations in the reaction in the question I believe (e.g no. of moles x Mr = mass, etc.)
    Offline

    2
    ReputationRep:
    What's the difference between Cis, trans and E/Z isomerism? I don't understand the explanation in the textbook.

    Im OCR A if that helps! :-)
    Offline

    17
    ReputationRep:
    (Original post by PepperPotts)
    First one's on Atoms Bonds and Groups on the 22nd May, Second- Chains, Energy and Resources on the 2nd June
    Thanks!
    Offline

    3
    ReputationRep:
    (Original post by GoldGhost)
    What's the difference between Cis, trans and E/Z isomerism? I don't understand the explanation in the textbook.

    Im OCR A if that helps! :-)
    Im doing AQA, so this may explain too much/not enough but here goes.

    Firstly, I remember it as E/Z, not Cis/Trans as E/Z tells me what the isomers look like.

    I'm assuming that you know that each of the Carbon atoms must have two different groups attached to them and that the stereoisomers "have the same structural formula, just a different arrangement in space" (the "...." is a 1-2 mark answer which I know off by heart, as it is often asked).

    Here are two stereoisomers:

    I remember the E/Z from what they look like; the one that looks like an 'E', is the Z (Draw a Z in midair across the stereoisomer: For the first it would go from H-Cl-Cl-H and the 2nd does not look like a Z.)
    Edit: The trans is the one that has same groups diagonally across from each other.
    This shows a way to explain which is E and Z and which is Cis and Trans, but I believe that you only need to know one of them.

    If you need to know anything else, just say.
    The drawing E/Z in midair may be confusing from my writing as it is hard to explain without doing it in front of you.
    • Welcome Squad
    Offline

    3
    ReputationRep:
    (Original post by l1lvink)
    Im doing AQA, so this may explain too much/not enough but here goes.

    Firstly, I remember it as E/Z, not Cis/Trans as E/Z tells me what the isomers look like.

    I'm assuming that you know that each of the Carbon atoms must have two different groups attached to them and that the stereoisomers "have the same structural formula, just a different arrangement in space" (the "...." is a 1-2 mark answer which I know off by heart, as it is often asked).

    Here are two stereoisomers:

    I remember the E/Z from what they look like; the one that looks like an 'E', is the Z (Draw a Z in midair across the stereoisomer: For the first it would go from H-Cl-Cl-H and the 2nd does not look like a Z.)
    Edit: The trans is the one that has same groups diagonally across from each other.
    This shows a way to explain which is E and Z and which is Cis and Trans, but I believe that you only need to know one of them.

    If you need to know anything else, just say.
    The drawing E/Z in midair may be confusing from my writing as it is hard to explain without doing it in front of you.
    Another easy way to learn E/Z rules is that E = epposite side (I know its cheesy) and Z = zame zide
    Offline

    3
    ReputationRep:
    (Original post by zhang-liao)
    Another easy way to learn E/Z rules is that E = epposite side (I know its cheesy) and Z = zame zide
    Hmm, I like the zame zide.
    I wonder how many other ways there are of remembering this.
    • Welcome Squad
    Offline

    3
    ReputationRep:
    (Original post by l1lvink)
    Hmm, I like the zame zide.
    I wonder how many other ways there are of remembering this.
    Courtesy of Chemrevise :lol:
    • Peer Support Volunteers
    • Clearing and Applications Advisor
    • Study Helper
    Offline

    18
    Moved to Chemistry.
    • Community Assistant
    • Study Helper
    Offline

    14
    ReputationRep:
    (Original post by GoldGhost)
    What's the difference between Cis, trans and E/Z isomerism? I don't understand the explanation in the textbook.

    Im OCR A if that helps! :-)
    E/Z is a more complete way of designating stereoisomers as it can be used for unsaturated compounds that don't have two groups the same. eg FClC=CBrI

    Cis-trans description requires that at least two of the groups attached to the double bond are identical.
 
 
 
Poll
If you won £30,000, which of these would you spend it on?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.