ANCQ CHEMICAL RESOURCE CENTRE

    Our collection of chemical resources.
    Mar
    11

    IN SEARCH OF MORE SOLUTIONS 2000

    J TaylorThe Royal Society of Chemistry The following three problems have been reproduced (with permission from The Royal Society of Chemistry) from 'In Search of More Solutions, More Ideas from Problem Solving Activities' published and distributed by the Royal Society of Chemistry. ANY GLUCOSE?Design a biosensor to detect glucose. Glucose can be de...
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    Mar
    11

    IN SEARCH OF MORE SOLUTIONS 99

    J TaylorThe Royal Society of Chemistry The following three problems have been reproduced (with permission from The Royal Society of Chemistry) from 'In Search of More Solutions, More Ideas from Problem Solving Activities' published and distributed by the Royal Society of Chemistry. 6. FROM MILK TO CURDS AND WHEY. WHICH ENZYME?Find out which of the ...
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    Mar
    11

    MICROSCALE CHEMISTRY 2000

    J SkinnerThe Royal Society of Chemistry The following four experiments have been reproduced (with permission from The Royal Society of Chemistry) from "Microscale Chemistry" published and distributed by the Royal Society of Chemistry.4. THE REACTION OF METALS WITH ACIDSIn this experiment you will be looking at the reactions between various metals a...
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    Mar
    11

    MICROSCALE CHEMISTRY

    J SkinnerThe Royal Society of ChemistryThe following four experiments have been reproduced (with permission from The Royal Society of Chemistry) from "Microscale Chemistry" published and distributed by the Royal Society of Chemistry.3. OBSERVING CHEMTCAL CHANGESIn this experiment you will be observing the changes that occur when you mix solutions o...
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    Mar
    11

    Light Scattering by a Colloid (The Tyndall Effect) - "The Thiosulfate Sunset"

    DescriptionA beam of white light is shone through a solution of sodium thiosulfate and onto a screen. Dilute hydrochloric acid is added to the thiosulfate and colloidal sulfur is formed. The light beam becomes visible in the solution as a bluish 'Tyndall cone' due to light scattered from the colloidal particles. Blue light is scattered more effecti...
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    Mar
    11

    The Thermal Decomposition of Nitrates - "Magic Writing"

    Description A message is written on filter paper with a solution of sodium nitrate and is then dried. Applying a glowing taper to the start of the message makes the treated paper smoulder and the message is revealed as the glow spreads its way through the treated paper only.Apparatus​Filter or blotting paper sheets - as large as possible.Wooden tap...
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    Mar
    11

    Red, White and Blue

    ​Description A solution of ammonia is poured into each of three beakers which contain (unknown to the audience) a little phenolphthalein, a little lead nitrate solution and a little copper sulfate solution. The beakers' contents turn red, milky white and deep blue respectively. Pouring the contents of the beakers into acid reverses the changes to g...
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    Mar
    11

    Allotropes of Sulfur

    Apparatus ​Boiling tubes, 2Test tube holdersConical flask, 250mLCork, to fit conical flaskBeaker, 250mLBeaker, 1LPetri dish or watch glass.Microscope - ideally a projection or video microscope.Bunsen burner, tripod and gauze, or electric hotplateHeat resistant mat.Filter paper - about 18cm in diameter.Access to a fume cupboard.Chemicals​Sulfur, pow...
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    Mar
    05

    The "Breathalyser" Reaction

    Description A U-tube is packed with orange crystals of potassium dichromate moistened with dilute sulfuric acid. Air saturated with ethanol vapour is blown or sucked over these crystals which turn from brown to green as the alcohol reduces the chromium (VI) to chromium(III).Apparatus​One U-tube (length of arm about 10cm). Each arm should have a one...
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    Mar
    05

    Movement of Ions During Electrolysis

    Description A petri dish containing sodium sulfate solution and bromocresolpurple indicator (yellow in acid, blue in alkali) is placed on an overhead projector. The solution is electrolysed and a blue colour streaming from the cathode shows the movement of hydroxide ions. These can be deflected by a magnetic field and shown to obey the left hand mo...
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