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Showing results 1 to 10 of 101
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GL159 - Removing oxygen in a seed germination practical without using alkaline pyrogallol
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A fairly simple activity, which is safer than the traditional practical because it avoids the use of corrosive concentrated alkaline pyrogallol solution.
words matched: alkaline
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RB105 - Winkler's method for dissolved oxygen
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Guidance on how to prepare and use of the required solutions for the determination of the dissolved oxygen content of water samples using Winkler's method. The procedure described avoids the use of so.. more
words matched: alkaline
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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: alkaline
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GL225 - Batteries for general practical circuit work
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This guidance is for choosing batteries for general practical circuit work, where pupils experiment with low-voltage circuits by connecting batteries , torch bulbs, buzzers, small motors and other low.. more
words matched: alkaline
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PP023 - Investigating the internal resistance of cells
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A safe, simple procedure to investigate this important property of electrical cells.
words matched: alkaline
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PP115 - Testing for organic functional groups: unsaturation or double bonds
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Testing for organic functional groups: unsaturation or double bonds
words matched: alkaline
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Bulletin 102 - summer 1998
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This edition includes notes on fume cupboard testing, working safely with wood dusts, not using mains-powered open wire radiant heaters, dissecting butchers' bits, an introduction to microscale chemis.. more
words matched: alkaline
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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: alkaline
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R035 - pH measurement
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Contains a wealth of information on the various ways of measuring pH, and the advantage and disadvantage os each. Includes all sorts of background theory which will help the reader make the most appro.. more
words matched: alkaline
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PP109 - Anion analysis: Microscale
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Common anions are tested on a plastic covered worksheet, for quick easy disposal. Using solutions with minimum concentrations allows closer observations and initiates talking points. Students can phot.. more
words matched: alkaline
Showing results 1 to 10 of 101
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