iGCSE Chemistry (Level 1/2 AQA) Paper 2??

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avalanchex
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Report Thread starter 5 years ago
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Hi, would anyone be able to tell me vaguely the topics on paper 1 or what they expect on paper 2? I think there'll be a titration, but that's all I can remember not seeing!

Thankyou!!
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NP2803
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structure and bonding, equilibrium definitely won't come up.
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Salain
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My top list of ideas for paper 2.
It's by no means a definitive list, and don't rule out overlap of paper 1 material in places.

  • Testing for ions - flame tests, solution tests etc
  • paper chromatography - method and errors in the method, measuring and calculating the Rf factor, comparing to gas chromatography
  • Measuring energy changes in reactions, use of Q = mc delta T , experimental errors when using a copper calorimeter for measuring energy released from a fuel, or not using a polystyrene cup when measuring enthalpy change of a solution
  • bond energy calculations
  • Extracting metals - phytomining, bioleaching, alloys - properties
  • alternative fuels, evaluating fuels, method of fermentation for making ethanol
  • Rates of reaction experiments, explaining results in terms of collision theory
  • diffusion and diffusion related experiments
  • Titrations - how to do the method, using results from a titration, reading a value from a burette, and a calculation using n=cV
  • water treatment
  • percentage yield calculation, reasons for low percentage yield, ways of reducing loss of product etc
  • pollution from burning fuels - effects on the environment, comparing fuels
  • thermosoftening, thermosetting polymers, hdpe. Ldpe
  • drawing dot and cross diagrams
  • giant covalent structures
  • esters , carboxylic acids, alcohols - reactions of
    In general, systematic errors or random errors - suggesting a reason for error, anomalous results and calculating a mean - how to improve accuracy by calculating a mean and discarding averages
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