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Instructions on how to make a conductivity indicator for chemical solutions and materials.
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Explains what is meant by environmental monitoring, and the range of equipment available. Describes in detail each of the parameters which can be monitored including possible difficulties. Also descri.. more
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Gives guidance on general fieldwork including specific measurements and techniques. Detailed guidance is included on measuring substances in the soil, water and air, and electronic measurements such a.. more
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You can demonstrate that hot glass is an electrical conductor (hot glass is actually an example of a solid electrolyte). This is counterintuitive because at room temperature, glass is a good electrica.. more
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This video demonstrates the 'traditional' method for demonstrating electrolysis of molten salts, as well as a new microscale method showing the difference in conductivity.
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This video describes the use of the CLEAPSS conductivity indicator with aqueous solutions. Only the consequence of conductivity, that is electrolysis, is mentioned in specifications by examination Boa.. more
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Gives very detailed guidance on what water purification entails, and when pure water is needed in school science. It suggests the advantages and disadvantages of the methods of purification available .. more
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A short overview of the common methods of water purification in school laboratories, include pros and cons. This will be useful for any teacher or technician looking to buy a new water purification sy.. more
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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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Microscale reduction of copper(II) oxide with hydrogen gas
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