Aqa IGCSE Physics Paper 2??

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Testing for ions - flame tests, solution tests etc

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paper chromatography - method and errors in the method, measuring and calculating the Rf factor, comparing to gas chromatography

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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

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bond energy calculations

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Extracting metals - phytomining, bioleaching, alloys - properties

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alternative fuels, evaluating fuels, method of fermentation for making ethanol

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Rates of reaction experiments, explaining results in terms of collision theory

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diffusion and diffusion related experiments

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Titrations - how to do the method, using results from a titration, reading a value from a burette, and a calculation using n=cV

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water treatment

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percentage yield calculation, reasons for low percentage yield, ways of reducing loss of product etc

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pollution from burning fuels - effects on the environment, comparing fuels

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thermosoftening, thermosetting polymers, hdpe. Ldpe

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drawing dot and cross diagrams

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giant covalent structures

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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