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  1. J

    Physics and Biology Unit 3B Notes?

  2. J

    Chemistry Unit 3 Revision before the exam!

    the 3b resources posted are the practicals, did you study all of them?
  3. J

    Chemistry Unit 3 Revision before the exam!

    to neutralise the solution
  4. J

    C1 Help!

    So, if it were to be a translation in the x direction, what would it look like? y= 2/(x-a) - 5 ?
  5. J

    Chemistry Unit 3 Revision before the exam!

    what did you study for physics unit 3b?
  6. J

    Chemistry Unit 3 Revision before the exam!

    This is what i picked up from doing past papers, but honestly, that's not enough, you need to study unit 1 and 2 since anything from those 2 units could crop up!
  7. J

    C1 Help!

    i don't understand, could you please explain again? i'm sorry, i've never really been good with graphs :( f(a+x), according to my text book, is a translation of -a in the x direction, so why should it move up or down if it doesn't affect the y direction?
  8. J

    Chemistry Unit 3 Revision before the exam!

    yupppp got it! i thought you meant some more theory regarding that reaction. i've done all the past papers, including the specimen paper. i've revised fro physics unit 3 too, and now i'm on c1 revision. thanks!
  9. J

    C1 Help!

    I'm going through the C1 January 2013 paper and I have a problem. I've been taught that f(x+a) is a translation of -a in the x direction Now, question 6a from January 2013 asks me to sketch "y = 2/x - 5" According to my theory, this should mean that the original curve should be translated +5 in...
  10. J

    Chemistry Unit 3 Revision before the exam!

    what do you need to know about sodium thiosulfate iodine? all i know is that the indicator has to be starch and it'd change from blue-black to colourless
  11. J

    Really need notes for chem and physics unit 3b

    My chemi Unit 3b is also tomorrow :(
  12. J

    Chemistry Unit 3 Revision before the exam!

    Here are some notes which I made up using the user guide and going through all the past papers. The silver nitrate test for halides is definitely going to come up, as well as the flame tests!
  13. J

    June 2013 Edexcel exams!

  14. J

    Physics UNIT 3?

    Wavelength is the distance between two crests, so you need the distance between the 2nd "stick" and the 2nd last "stick"
  15. J

    June 2013 Edexcel exams!

    Because the wavelength is from one crest to the next, so you have to see the distance between the 2nd "stick" and the 2nd last "stick"
  16. J

    June 2013 Edexcel exams!

    That's a little bit harder to explain from here, but u'll try! When you get an equation, rearrange it to the form of y=mx+c, in this case, our equation is eV = hf - the work function. Question 8c tells you to plot a graph of V on the y-axis and f on the x-axis. Therefore, in this case, V is y...
  17. J

    June 2013 Edexcel exams!

    I updated it, and converted it to pdf, download this one, it's all you need to know for Unit 7:
  18. J

    Physics UNIT 3?

    Just go through past papers, they'll definitely help you, and also go through examiners reports. You could also use the attached document as a guidance:
  19. J

    What to study for chemistry 3b

    This is all you need to know
  20. J

    Physics and Biology Unit 3B Notes?

    Nope, Jan 2009 papers for these units don't exist, they began examining on Unit 3b from June 2009. These might help for Physics, although they're for the actual practical exam, you can use them to guide your notes, it's long, but definitely worth going over. I'm using it to make notes for...
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