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  1. SarahCh8

    IGCSE chemistry paper 6

    It was between Iron powder & Copper(II) sulphate, so Iron is more reactive than copper so it can displace. What was the reason for largest temperature rise? :/
  2. SarahCh8

    IGCSE chemistry paper 6

    It was displacement reaction, right? What was the reason for largest temperature rise? :/
  3. SarahCh8

    IGCSE chemistry paper 6

    Yuss, it was 0.45g & when we add up it was 1.15g of CaO. :P I wrote It smells of vinegar & pH 2 - 4 (I should have written 2 - 6 I think) :/ Color change was RED as it was an acid. As LovelyNimmy said, all the answers were written through my knowledge so don't compare yours and think you...
  4. SarahCh8

    0620 Chemistry Paper 6 HELP!!

    Can we please discuss the paper 62? What was the answer for (Why is crucible heated thrice?) I wrote ( for accuracy, and maybe some calcium was left unreacted before or there might have been an error in weighing before. ) Is it correct? :S
  5. SarahCh8

    lost in this crowd...

    0620 paper 62? anyone done with it?
  6. SarahCh8

    IGCSE chemistry paper 6

    Yeah, it was alcohol (ethanol). :P Btw, what was the answer of ( what is the effect on temperature if 1g of magnesium ribbon used instead of 1g magnesium powder?) There was a question something like that?
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