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Blast furnace in a ignition tube
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A small amount of sodium is added to concentrated hydrochloric acid. There is fizzing and a precipitate of sodium chloride forms but no explosion. If potassium is used there is ignition but again, no .. more
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The positive ions aluminium (Al3+), potassium (K+), lead(II) (Pb2+) and ammonia (NH4+) can be tested for with simple test tube reactions. These tests are more specific than precipitation reactions wit.. more
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The metal ions cobalt(II), copper(II), iron(II) and iron(III) can be tested for with simple test tube reactions. These tests are more specific than precipitation reactions with sodium hydroxide soluti.. more
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Crude oil refinery is a foundation industry, providing fuel products for heating and transport, and raw materials for many further industries, including polymer and pharmaceutical manufacturing. Fract.. more
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This now inclduies some general information on food calorimetry as well as explaining something of nut allergy and a range of control measures which could be used to enable effective, relevant practic.. more
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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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Brief risk assessment guidance and experimental notes for a range of activities involving zinc metal (Hazcard 107).
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Testing for organic functional groups: unsaturation or double bonds
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Many 16+ curriculums include testing for organic functional groups. The iodoform reaction is a simple test for the presence of the acetyl (ethanoyl) group (CH3CO–). The reaction can also be used to te.. more
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