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    hey, just found this thread and opened up a few links and physicsandmathtutor is amazing!! it has amasing condensed notes for each topic ! I do the new WJEC spec Wales so we don't have a lot of resouces (the text book sucks) we use chemical ideas 3.1 textbook in class and my tech loves OCR! u have just saved me !! thank you sooooo much !!
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    (Original post by ForgottenApple;[url="tel:62946525")
    62946525[/url]]I did, by about this time. You're going to want to supplement any extra work you can, if you're working towards the top grade it's all about maximizing practice, by using other boards questions of course, but keep your eye on the prize. Don't burn through all of OCR content before moving to another board, DO THEM IN PARALLEL. Exam technique is a huge % of the mark, and trust me it can cost you a grade. It's all well and good knowing the chemistry which practice brings but remember you're passing an exam aswell, specifically OCR's.

    I just had a look at my past paper spreadsheet and I did every single OCR paper twice, tracked at least. So if you're serious about getting close to 100% it might be a good idea to do all now, move onto other boards, then returning for a second run at OCR when you've forgotten them in a couple months.
    Thanks you very much, I am currently going through all the questions I can. If I'm honest it's a lot of work and chemistry needs a lot of practice and skill, especially since I'm trying to aim for an A. Would you recommend that I stick to the OCR main textbook and the OCR condensed revision guide ? There are loads of new books out, for example the updated OCR A2 book for the new syllabus is on Amazon, there is the CGP book aswell and some A2 salters books that I've seen. I don't want to overwhelm my self with all these different books and past papers because I end up procrastinating. I've even went to the extent of printing Doc Brown Redox questions and some hard NMR problems from the Internet as these are the hardest topics for me. I just don't want to overwork myself and become bored and fed up with it all. I just want to do things I need to do and not end up wasting time on random stuff. Here's the list of papers in doing;

    - Main F321,F324 and F325 papers
    - OLD legacy papers for the above
    - Doc Brown Redox questions printed
    - AQA and Edexcel A2 papers
    - Hard NMR problems from the Internet

    However I have to many books and it's causing me to waste time and procrastinate. Please could you tell me ur opinion on which books are worth using for these final 3/4 months. There's just too many to choose from. I have been through the A2 OCR papers in September and I've printed them again because the information starts to slip from my mind. I'm also sitting A2 Maths (5 modules) so it's quite intense. I am on a gap year and I am by no means smart but I will do what ever it takes. If I choose to resit F321, F324 and F325 it will take the pressure off the A2 modules, however there's more stuff to revise. If I just do A2 its more pressure as I have to get an A and B in either module to JUST get an A. I personally think F325 will be difficult this year and F324 will be of a decent standard.
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    Problem is, there will always be a question that separates the best from the average. That's for most a level exams. Chemistry this year will have new types of questions in both AS and A2. Those marks are tough to get and that's the challenge I need to overcome, hence why just practicing OCR alone is not good enough me and this may apply to some others. It depends on how good you are at interpreting things and how well you can apply ur knowledge. OCR and all exam boards are smart, they know that students will buy the OCR book and do OCR papers as they know we have a lot of stuff to do and probably won't get enough time to try new types of questions. So I do advise everyone to try new types of questions if you get time, it could make the difference. Examiners want to catch you out and they even write in one of the reports that candidates who just try to remember answers and ways of doing things are the ones that will be disappointed on results day, well at least for chem. UNDERSTANDING>MEMORY.
    F324 June 2015 is a good example of what I'm trying to say and F325 Jan 2013 aswell.
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    (Original post by Danllo)
    Problem is, there will always be a question that separates the best from the average. That's for most a level exams. Chemistry this year will have new types of questions in both AS and A2. Those marks are tough to get and that's the challenge I need to overcome, hence why just practicing OCR alone is not good enough me and this may apply to some others. It depends on how good you are at interpreting things and how well you can apply ur knowledge. OCR and all exam boards are smart, they know that students will buy the OCR book and do OCR papers as they know we have a lot of stuff to do and probably won't get enough time to try new types of questions. So I do advise everyone to try new types of questions if you get time, it could make the difference. Examiners want to catch you out and they even write in one of the reports that candidates who just try to remember answers and ways of doing things are the ones that will be disappointed on results day, well at least for chem. UNDERSTANDING>MEMORY.
    F324 June 2015 is a good example of what I'm trying to say and F325 Jan 2013 aswell.
    Always understand the steps you're taking or you're wasting your time. Do the papers from Jan 10 onwards from other boards, this is when the A* questions started popping up and exam boards steal from each other.

    The reason I say to practice the other boards aswell is because it develops a real deep rooted understanding which is what's needed.
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    I'm first year, doing AS. Does anybody have tips for the new specification?

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    (Original post by gooner_hsj)
    I'm first year, doing AS. Does anybody have tips for the new specification?

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    I imagine it's very much the same, without the safety net of half results half way. Check your spec and do relevant questions on past papers from the current papers and other boards. The chemistry is the same.
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    (Original post by ForgottenApple;[url="tel:62951901")
    62951901[/url]]Always understand the steps you're taking or you're wasting your time. Do the papers from Jan 10 onwards from other boards, this is when the A* questions started popping up and exam boards steal from each other.

    The reason I say to practice the other boards aswell is because it develops a real deep rooted understanding which is what's needed.
    Totally agree with you !
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    Just posted this on my grow your grades thread not sure if it will be helpful fr anyone.
    I have made a list of questions from the specification of OCR A (Old Specification) for the A2 unit 1 Module 1 and Unit 2 Module 3 :Transition metals. They are just the questions at the moment have not gotten round to typing up the answers yet but have made them. Might be helpful to see which questions you have no idea on how to answer and an alternative to doing the past papers over and over. Hope its helpful! (I'm doing A2 course at the moment got an A at AS and really want an A this year)
    Attached Files
  1. File Type: docx A2 Chemistry Unit 1 Module 1 questions.docx (15.4 KB, 182 views)
  2. File Type: docx A2 Chemistry Unit 2 Module 3 Questions.docx (17.2 KB, 142 views)
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    (Original post by CSLady)
    Just posted this on my grow your grades thread not sure if it will be helpful fr anyone.
    I have made a list of questions from the specification of OCR A (Old Specification) for the A2 unit 1 Module 1 and Unit 2 Module 3 :Transition metals. They are just the questions at the moment have not gotten round to typing up the answers yet but have made them. Might be helpful to see which questions you have no idea on how to answer and an alternative to doing the past papers over and over. Hope its helpful! (I'm doing A2 course at the moment got an A at AS and really want an A this year)
    I don't like that marks aren't shown. You are passing an exam at the end of the day and judging difficulty from the marks is a key skill.
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    (Original post by ForgottenApple)
    I don't like that marks aren't shown. You are passing an exam at the end of the day and judging difficulty from the marks is a key skill.
    They are not real exam questions they are made up. They are questions I made up from the specification. So I took the specification and reworded it into questions. looking back I didn't make that clear in this post while I did in the one on my grow your grade thread. There are no marks cause I don't know how many marks they would be as they are not real exam questions. They are just a guideline and cover all areas on the specification in those particular module. Sorry for any confusion.


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    (Original post by ForgottenApple)
    Always understand the steps you're taking or you're wasting your time. Do the papers from Jan 10 onwards from other boards, this is when the A* questions started popping up and exam boards steal from each other.

    The reason I say to practice the other boards aswell is because it develops a real deep rooted understanding which is what's needed.
    So past papers from other boards are important also yes?

    I'm taking a year out and redoing F325 because I flopped on the day. I done pretty well on F324 and coursework getting a high A and A* respectively but felt I should have got higher considering how well I knew the spec and the past papers that I done, however that exam was brutal.

    I don't find the learning difficult or even answering questions but there were a few questions that, in an exam environment, threw me off the pace and I panicked.

    I'm going for an A*, as close to 100% as possible, in F325. What do you propose I should do beyond going through the textbook and OCR past papers in order to achieve it?


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    Hello,

    I was skimming through exam pro and came across this question. For 'Reaction 3' it asks for the reagent, which according to the markscheme is Na2CO3.

    Is this somthing we need to know or might this be from the AQQ spec?

    Cheers


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    Mg(NO3)2 how would I assign the oxidation numbers to this ?
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    (Original post by Danllo)
    Mg(NO3)2 how would I assign the oxidation numbers to this ?
    Mg is always 2+ and Oxygen in this case is 2- (go over the oxidation number rules), the overall charge of the compound is zero, so do a normal algebra equation of 2+2x+6(-2)=zero and you should get x=5+ which is the oxidation number for Nitrogen

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    (Original post by Xetter)
    Hello,

    I was skimming through exam pro and came across this question. For 'Reaction 3' it asks for the reagent, which according to the markscheme is Na2CO3.

    Is this somthing we need to know or might this be from the AQQ spec?

    Cheers


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    The only ones you need to know are the ones in the OCR specification.
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    Hey guys. If you can help me how you work this question out I'd be really grateful.

    Hydrogen peroxide reacts in a first order reaction with a half life of 27 secs. If the intitiam concentration is 1.60 mol dm-3, what is the conc after 81 secs.
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    I was searching on Google for stretch and challenge questions for A2. I found this document (link below)

    http://www.cotham.bristol.sch.uk/_fi...cher_guide.pdf

    But this document only contains answers. Does anyone know where I could find the questions to these answers ?
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    (Original post by SklIsMentalAbuse)
    Hey guys. If you can help me how you work this question out I'd be really grateful.

    Hydrogen peroxide reacts in a first order reaction with a half life of 27 secs. If the intitiam concentration is 1.60 mol dm-3, what is the conc after 81 secs.
    Its half life is 27 seconds, meaning that every 27 seconds, its concentration will decrease by half. 81 seconds equates to 3 half lives (27 x 3), so the concentration will decrease by half 3 times. So to get from its starting [ ] to its [ ] after 81 secs, you do 1.60 x 1/2 x 1/2 x 1/2.

    Don't hesitate to ask me more questions, I'll try to answer them
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    Extract from my past paper spreadsheet
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    (Original post by Kamara7)
    Its half life is 27 seconds, meaning that every 27 seconds, its concentration will decrease by half. 81 seconds equates to 3 half lives (27 x 3), so the concentration will decrease by half 3 times. So to get from its starting [ ] to its [ ] after 81 secs, you do 81 x 1/2 x 1/2 x 1/2.

    Don't hesitate to ask me more questions, I'll try to answer them
    Good answer. A simple way to represent this, providing you do maths, is [A](1/2)n where n is the number of half lives and [A] is the initial concentration of the whatever is reacting. This will work with any numbers they give though this is beyond the scope of the course but understanding it is a good and quick checking mechanism. Simple way is Kamara. Either is good.
 
 
 
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