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    Do you have any advice on how to improve grades?
    How many hours a day
    What's the most efficient method? Etc
    Thank you


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    (Original post by spiritless98)
    Do you have any advice on how to improve grades?
    How many hours a day
    What's the most efficient method? Etc
    Thank you


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    If you do and understand past papers, all homeworks etc. that's all you need to do, if not multiple times. have a spreadsheet of all the past papers, worksheets and homeworks I did and the scores achieved. This provides a way to quickly analyze weak spots and spend more time on a particular topic.
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    These notes are amazing. Thankyou
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    But this can't be used for exams after 2015 right? Since the specifications changed.
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    (Original post by _Lizabeth_)
    But this can't be used for exams after 2015 right? Since the specifications changed.
    Specs changed but a lot of the content is similar
    It's mostly just been arranged into different modules with a few things removed and a few added


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    (Original post by spiritless98)
    Specs changed but a lot of the content is similar
    It's mostly just been arranged into different modules with a few things removed and a few added


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    This is true. Although for anyone who is studying for future/sister specifications and a good exercise I'd suggest is to generate your own notes, using these and other sources to create your own personal spin on it.
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    For those that were asking F325 revision notes have now been compiled and added to the thread, I've also added a useful links section I plan to update with the website resources I use (and perhaps If I find). I'm also considering adding my past paper spreadsheet as a template if there's any interest.
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    (Original post by ForgottenApple)
    For those that were asking F325 revision notes have now been compiled and added to the thread, I've also added a useful links section I plan to update with the website resources I use (and perhaps If I find). I'm also considering adding my past paper spreadsheet as a template if there's any interest.
    That past paper spreadsheet sounds good
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    Hi
    Can u help me with this question, I calculated in the previous question that the
    pH was 11.7
    And then after further treatment, the new sample had 100 times greater OH- than the H+
    What is the pH of the new sample, its only 1 mark so I guess theres no calculation
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    (Original post by ForgottenApple)
    Thread is in progress. Comment if a link is broken and I'll fix it asap.

    Hello I am ForgottenApple, I recently finish A Levels with some reasonable results (A*A*A* Maths, Physics & Chemistry). This thread is to help you achieve something similar at the same level. I created these resources for myself last year and have brought them up into a good enough order to help other people out. This thread is a chemistry counterpart to a new thread I've made this year for Chemistry and incorperates all but the practical element of the OCR Chemistry A Level course (to be revised in 2015) but nonetheless there is a full year of students who can benefit from these resources and any students who opt to resit thereafter.

    Most notes I wrote last year, as well as the standard answers being made by me (idea from my college), definitions lists, legacy resources/past papers/bonus questions tend to be lifted :P

    Link to physics thread
    Unlike the physics thread
    I'm going to sort of build this as I go so it may not be complete for a month-ish

    Important Links
    Physics and maths tutor: Includes extra past papers from other exam boards, and the extremely useful questions by topic
    A Level Chemistry Website, mostly older spec past papers, and questions with solutions!
    Memrise - Excellent for rote learning definitions, equations and reactions (Good iOS and Android App!)

    F321
    Definitions
    Standard Answers

    F322
    Definitions
    Standard Answers

    F324
    ah organic chemistry, I decided to go with a unique 'on a page' model for this unit, inspired by maths which condensed units down to a single page. I'm going to release a PDF version of this, so you can print out pages as required
    Interactive Definitions
    Interactive Important Reactions and Conditions
    Full PDF of on a page
    Standard answers compiled from all legacy and current specification
    Legacy Past Papers



    F325
    Interactive Definitions
    Notes
    Standard Answers compiled from all legacy and current specification
    Legacy Past Papers & This
    Past Paper Spreadsheet Excel Template
    Thank you so much for these resources!!! :woo:
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    (Original post by R.abokor)
    Hi
    Can u help me with this question, I calculated in the previous question that the
    pH was 11.7
    And then after further treatment, the new sample had 100 times greater OH- than the H+
    What is the pH of the new sample, its only 1 mark so I guess theres no calculation
    Hey Rabokor basically what ya gotta do is shove what ya been told into the formula.

    Kw= [OH-][H+]
    Kw = 1x10^-14 at 25 degreesals

    We've been told that [OH-] = 100[H+]
    so we substitute this back in (least I would).
    Kw = 100 x [H+] x [H+] = 100[H+]^2

    Now you can rearrange and solve for H+ which gives you the pH

    I got 8 when I did it, so check with the ms to make sure I'm talking some sense!
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    (Original post by ForgottenApple)
    Hey Rabokor basically what ya gotta do is shove what ya been told into the formula.

    Kw= [OH-][H+]
    Kw = 1x10^-14 at 25 degreesals

    We've been told that [OH-] = 100[H+]
    so we substitute this back in (least I would).
    Kw = 100 x [H+] x [H+] = 100[H+]^2

    Now you can rearrange and solve for H+ which gives you the pH

    I got 8 when I did it, so check with the ms to make sure I'm talking some sense!

    yes thats the right answer!!!
    thank you so much for the detailed explanation, i get it now
    Also thanks a lot for sharing all these resources!
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    Does anyone have access to the f325 paper June 2015?
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    I've found some useful Chemistry revision links:

    http://chemrevise.org/
    http://www.chemguide.co.uk/
    http://www.chemnotes.org.uk/ocr.html
    http://a-levelchemistry.co.uk/
    http://www.physicsandmathstutor.com/chemistry-revision/
    http://www.scienceskool.co.uk/
    http://alevelchem.com/
    www.docbrown.info
    http://www.s-cool.co.uk/a-level/chemistry
    http://www.chembook.co.uk/

    etc...

    Feel free to add on..
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    Happy New Year guys! May the new year bring you new Chemistry jokes

    I would make a Chemistry joke but I'm afraid it won't get a reaction right now.
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    (Original post by thatcooldude2.0)
    Happy New Year guys! May the new year bring you new Chemistry jokes

    I would make a Chemistry joke but I'm afraid it won't get a reaction right now.
    Happy new year to you too



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    (Original post by spiritless98)
    Happy new year to you too



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    Thanks!
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    Really struggling to understand Entropy
    It's only 2 pages of the book and seems strightforward but when I tried past paper questions, I just couldn't understand
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    wish there was something like this for OCR B ;_;

    THERES NOTHINGGGG
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    Hi Can someone help with this question please . 3(a) i Name:  ImageUploadedByStudent Room1451760674.152419.jpg
Views: 454
Size:  62.2 KB. To get the moles of H2 do I times 3/2 and the equilibrium mixture of CH4 or times 3 by the moles c2h2 . How would I know which one to use ?


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