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This practical illustrates the idea that oxygen has mass, and that burning can involve an increase in mass as an element reacts to become an oxide. The activity also introduces the idea that the relat.. more
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Students have to learn about the gas laws, how properties such as pressure, volume, temperature, and amount of a gas change with respect to each other. With commonly-accessible bits of kit, it is poss.. more
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An extensive range of reference tables and data covering everything from atomic masses to unit conversion.
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Guidance on buying electronic balances for use by students up to GCSE and at A Level.
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An illustrated description of an investigation using a trolley and a single light gate detector.
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A straightforward investigation using simple equipment which will allow students to confirm Boyle's law.
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A simple investigation which, in addition to looking at the gas law, can be used to estimate absolute zero.
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Instructions for making concrete bars of varying compositions, which can be subsequently tested for strength.
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This provides an opportunity to develop and practice colorimetric techniques, and to plot a calibration curve. 
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This guide describes a method of finding the iodine number for fats and oils using bromine that does not require a fume cupboard and can therefore be used as a class activity.
words matched: increase, mass

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