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PP141 - The thiosulfate-acid reaction: rate and temperature
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Various monitoring techniques can be used to investigate how different factors affect the rates of reactions. The thiosulfate-acid ‘disappearing cross’ activity is an example of a clock reaction with .. more
words matched: initial, method, rate
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PP041 - The thiosulfate-acid reaction: rate and concentration
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Small scale 'disappearing cross' methods for investigating the effect of concentration on the rate of the sodium thiosulfate - acid reaction. Includes use of an alkaline 'stop-bath' to neutralise used.. more
words matched: initial, method, rate
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PP094 - Bromine clock reactions: disappearing pink
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The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The 'disappearing pink' method provides an alternative to iod.. more
words matched: initial, method, rate
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PP093 - Iodine clock reaction: Harcourt-Essen method
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The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The Harcourt-Essen method is useful as the reaction kinetics .. more
words matched: initial, method, rate
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TL014 - Small-scale Andrew’s apparatus for estimating rate of gas produced by a reaction
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This document gives details of how to use a small scale small-scale Andrews apparatus (see also GL148 below) to  allow measurement of the time taken to collect the first bubble of gas produced by a re.. more
words matched: initial, method, rate
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GL184 - Using video recording to measure the rate of photosynthesis
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Detailed guidance and instructions for a way to measure the rate of photosynthesis in aquatic plants by measuring the number of oxygen bubble produced and their volume. The practical uses simple equip.. more
words matched: initial, method, rate
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R010 - Water purification
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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
words matched: initial, method, rate
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PP027 - Making copper sulfate crystals
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A quick and safe method for preparing hydrated copper sulfate crystals from copper(II) oxide and sulfuric acid. The activity involves important techniques such as heating with a water bath, filtration.. more
words matched: initial, method, rate
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L221 - Developing and Using Environmental Areas in School Grounds
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This document contains wide ranging information on developing environmental areas in schools, from the initial planning stages through to environmental activities and classroom resources for when you .. more
words matched: initial, method, rate
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GL243 - Water purification buying guide
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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
words matched: initial, method, rate
Showing results 1 to 10 of 540
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