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Using atmospheric pressure to push a boiled egg into a conical flask
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A simple visual demonstration of the effects of reducing the pressure inside a bell jar on the boiling of warm water.
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Clear instructions and advice on how to safely heat flammable materials in test tubes.
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With careful supervision, students can carry a simple distillation to separate a pure substance (water) from a solution (copper(II) sulfate). This can be achieved by using a side-arm boiling tube inst.. more
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Clear advice and instructions on using a Bunsen burner to heat materials in test tubes.
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Advice on how to handle beakers of hot liquids safely and with confidence.
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This demonstration shows an important procedure in chemistry and industry, to separate a pure substance from a mixture of substances with widely differing boiling points. One important industrial exam.. more
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Showing the effects of a lower air pressure on the boiling point of water.
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This important procedure illustrates the conversion of saturated hydrocarbons, which are used for fuels, into the more chemically useful unsaturated hydrocarbons, used in making plastics.
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Testing for common gases is included in most chemistry courses. In this procedure students make their own sample of oxygen gas. Yeast is used as a source of the catalyst for the reaction and is an exa.. more
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