5/6/2023 0 Comments Flame painter 3 demo(At lower levels it can simply be used to look at the rate of reaction without the more complex mathematics) (CfE level 3, N5, H, AH)īlue Bottle Reaction – (d) The classic redox reaction. (CfE level 2/3)īleaching Blue Food Dye – (c),(i)Reaction to determine rate constant and order of reaction from the bleaching of blue food colouring by domestic bleach. (CfE level 3, N4, N5, H)īlack Magic – (c) Simple paper chromatography of ink. (CfE level 3)īelousov-Zhabotinskii Reaction – (d) A fascinating oscillating reaction that creates slowly expanding waves of colour.īiodiesel – (c),(d),(i) A range of experiments based around the production and testing of Biodiesel from vegetable oil. (H)īeakers Not Conicals – (d) A ‘trick’ reaction, where the colour change will only take place in a beaker, not a conical flask. (CfE level 3, N4, N5, H)Īzo-Dyes – (c),(d) A simple way to prepare some azo-dyes on a test tube scale (AH)īad Breath Indicator – (d) A simple demonstration of buffer solutions (CfE Level 3, AH)īalls of Fire – (d) an exciting demonstration where cotton wool balls are spontaneously ignited when touched with a glass rod that has manganese VII oxide on it. (N5, AH)Īn autocatalytic reaction – (d) A few drops of acid initiate a reaction which proceeds down a measuring cylinder changing colour as it goes – catalysed by its own products.Īntioxidants – (c),(d),(i) A Range of investigations based around the Briggs-Rauscher oscillating reaction to look at antioxidant levels in fruits and teas (though the method can be adapted for any antioxidant). (N5)Īnodising Titanium – The oxide layer on the surface is thickened electrolytically but unlike the aliminium, the thickness of the layer causes interference effects so changing the voltage will change the colour of the coating. (CfE level 3, H)Īnodising Aluminium – Using aluminium as the anode in a electoplating bach thickens the oxide layer and this can have dyes adsorbed into it to provide a permanent, not-scratchable surface. (CfE level 3, N5)Īmmonium dichromate volcano – (d) Once initiated (by heat) ammonium dichromate decomposes producing sparks and a large ‘eruption’ of chromium oxide. the introduction of a small amount of water lets some ammonia dissolve in it, reducing the pressure and producing a fountain as the water drawn into the dlask. (H)Īmmonia fountain – (d) A flask full of ammonia gas has a jet through a bung, the other end is submerged in water with aqn indicator. (CfE level 2, H)Īmmonia Fireflies – (d) A spectacular demonstration of catalysis of the oxidation of ammonia by Chromium III oxide (which needs to be generted from the ammonium dichromate volcano. (CfE level 3, H)Īmazing Penny Experiment – (c),(i) a simple experiment looking at surface tension by seeing how many drops of water you can get on a penny. This initiates a reaction to form aluminium iodide, producing clouds of purple iodine vapour in the process. It can be downloaded here ( Hazcard References).Īcid Rain in the Classroom – (c) A simple and safe method of demonstrating in test tubes the effects of Sulphur, Nitrogen and Carbon dioxides on waterĪluminium – Iodine reaction – (d) Solid iodine and aluminium powders are mixed and a few drops of hot water added. We are aware, though, that some independent schools offer ‘A’ levels and so have produced a sheet to enable teachers using eg RSC resources that specifically reference CLEAPSS Hazcards to find out which Hazcard entry is mirrored on which page of our website and click on the link. Not surprisingly, curricular references reference the Scottish curriculum. As always, though, these are merely suggestions: use them as you will. We also make suggestions as to the age groups they are suitable for. In order to give a bit of guidance as to usage, in the summaries we have used the following suffixes (c) for a classroom experiment (d) for a demonstration and (i) where we think it is suitable for investigative work. In addition, they can be browsed en masse from the pages below. The only form of separation is that the microscale activities are on their own page with tabs for the experiments, equipment making etc. There are now quite a few resources for teaching chemistry uploaded onto our website.They are linked to, where possible, from all the appropriate outcomes at the various curricular levels.
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