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  1. Casablanca

    How was physics paper 33

    Wasn't the cup already cylindrical? Mine was. :/
  2. Casablanca

    How was physics paper 33

    - 2 readings insufficient to determine proportionality. - Heat loss. - Possible inaccurate temperature reading. - Possible inaccurate diameter reading. (Wasn't sure about this one, but wrote it anyway since I didn't know what else to write.) - Take 6 readings, plot a graph, determine...
  3. Casablanca

    Physics practical 33 units?

    If it says the unit in the question, then you have to use that unit, otherwise it doesn't matter. It's easier to use grams though, since the weight is in grams, so I don't see why you would use anything else. :P
  4. Casablanca

    How was physics paper 33

    One person says it's 100% confirmed as positive by a teacher, and another person says it's 100% confirmed as negative by a teacher. You can't BOTH be right. :P
  5. Casablanca

    How was physics paper 33

    Now I'm genuinely confused about the gradient. ._.
  6. Casablanca

    How was physics paper 33

    My temperature change for both was approximately the same too, at around 4 degrees. Is that alright?
  7. Casablanca

    How was physics paper 33

    If I used (k2-k1)/k2 x 100, I would've gotten, like, 120% error. When I used the formula the other way round, it was around 60% error. I'm pretty sure I messed up there, but at least this value was slightly more acceptable. :P
  8. Casablanca

    How was physics paper 33

    My gradient was positive, but I didn't have any trend in the values either. I think I did well, but I'm not sure. Oh well, e.c.f will set us straight, hopefully.
  9. Casablanca

    Improvements Physics Practical

    Several sources told me that it does matter. You tell me it doesn't. I don't know for sure, but I'm going to play it safe and make them coincide anyway. It's not like it'll hurt to do so. I'm not saying you're wrong, but I'm not saying you're right either. As for the heat question, it's been...
  10. Casablanca

    physics paper 33

    There are past papers with it though. :l
  11. Casablanca

    physics paper 33

    It's the logo from Gears of War.
  12. Casablanca

    Improvements Physics Practical

    In every question: Source of error: Two readings are insufficient to determine proportionality between [variable X] and [variable Y]. Source of improvement: At least six readings should be taken, a graph should be plotted, and the proportionality should be determined according to the line...
  13. Casablanca

    physics paper 33

    One limitation and improvement you should all write down no matter what the question is: They're always going to ask you to find the proportionality of two things. Limitation: Two readings are not sufficient to determine proportionality between [variable X] and [variable Y]. Source of...
  14. Casablanca

    Chemistry: Post your doubts here!

    Thanks. It confirms that I did it right. :D
  15. Casablanca

    Private Candidate HELP

    I did all my practicals at a private tuition academy. See if there's one in your city that provides that service.
  16. Casablanca

    Chemistry: Post your doubts here!

    An organic compound has the following composition by mass: C - 48.7% H - 8.1% O - 43.2% Calculate the empirical formula. How do you solve these kinds of questions? In MCQs I used to just do trial and error with the options, but how do you do it in structured? :/ Edit: nvm, figured it out...
  17. Casablanca

    Chemistry: Post your doubts here!

    For enthalpy experiments, use insulating material, and use an electronic thermometer that takes more accurate readings. For titration, take multiple titration readings, and if there's anything interfering with the titration, get rid of it somehow (by heating, or filtering if it is a solid...
  18. Casablanca

    Chemistry: Post your doubts here!

    I was watching this one:
  19. Casablanca

    Chemistry: Post your doubts here!

    I didn't do as well as expected. None of the stuff I was good at came in the test. (p12) :cry: Anyway, we always have theory, and practicals to save us. We may yet manage a semi-decent grade. For now, I just wanna do well in practicals. Can someone link me to some good videos of people...
  20. Casablanca

    Chemistry: Post your doubts here!

    Could you check if the answer to 12 is C? If so, I could help. And if it's B, I still know how it works, but I think it's C. (I thought since you helped me so much, I could try and help you out with this one. :P I tried doing 21, and I know how to do it usually, but my answer is wrong, so I...
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