CLEAPSS Supporting practical science and technology
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This edition includes notes of the Getting Practical project, swine flu, a whoosh bottle incident, water supplies to labs, and possible electric shock from computer trolleys. In a D&T special ther.. more
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Risk Assessment for the exploding can, methane and air explosion.
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Alcohol is added to a series of beakers or crystallizing dishes containing metal salts and boric acid. The vapour is ignited and coloured flames are observed.
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Instructions, including control measures, for safely preparing and demonstrating shooting a bung from a soft drinks bottle (the 'gun').
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A mixture of hydrogen and air is prepared in a small plastic ‘fizzy drinks’ bottle and then ignited, so that the bottle travels, rocket-like, some distance.
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The low melting point of gallium metal is demonstrated, eg by using warm water to melt a sample or by making it into a spoon shape and showing that it melts when used to stir a cup of tea.
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A variety of simple demonstrations is performed using ‘dry ice’ (solid carbon dioxide).
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A complete set of risk-assessed instructions for safely demonstrating the explosive capacity of powders.
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Instructions, including risk assessed control measures, for safely demonstrating the explosive burning of a 1:2 methane/oxygen mixture.
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The explosion between hydrogen and oxygen, in the confines of a modern school laboratory, is extremely loud.A mixture of hydrogen and oxygen is placed inside a syringe. The mixture is bubbled into soa.. more
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