All Demonstration articles
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DemonstrationThe equilibrium between two coloured cobalt species
In this demonstration the equilibrium between two different coloured cobalt species is disturbed. Le Chatelier’s principle is used to predict a colour change.
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DemonstrationTurning copper coins into ‘silver’ and ‘gold’
Perform what looks like alchemy with ordinary copper coins in this teacher demonstration. Includes kit list and safety instructions.
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DemonstrationExploding bubbles of hydrogen and oxygen
Create a small explosion in this demonstration by electrolysing water to produce hydrogen and oxygen bubbles. Includes kit list, video and safety instructions.
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DemonstrationCracking hydrocarbons in liquid paraffin with a catalyst
Model the industrial process of cracking larger hydrocarbons to produce smaller alkanes in this demonstration or class practical. Includes kit list and safety instructions.
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DemonstrationTurning ‘red wine’ into ‘water’
Use acidified potassium permanganate – or ‘red wine’ – to make ‘water’, ‘milk’ and ‘lemonade’ in this engaging demonstration. Includes kit list and safety instructions.
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DemonstrationHeating group 1 metals in air and in chlorine
Use this demonstration to illustrate the reactions of lithium, sodium and potassium in air and in chlorine. Includes kit list, video and safety instructions.
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DemonstrationAmmonia fountain demonstration
Try this experiment to make a miniature chemical fountain using only soluble ammonia and atmospheric pressure. Includes kit list and safety instructions.
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DemonstrationDetermining relative molecular mass by weighing gases
Use this demonstration to determine the relative molecular masses of different gases using the ideal gas equation. Includes kit list and safety instructions.
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DemonstrationElectrolysis of molten zinc chloride
Try this demonstration to show how an ionic salt will conduct electricity when molten but not when solid. Includes kit list, video and safety instructions.
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DemonstrationThe silver mirror test with Tollens’ reagent
Try this practical to explore the mirror-making reaction between silver nitrate (Tollens’ reagent) and glucose. Includes kit list, video and safety instructions.
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DemonstrationHalogen reactions with iron wool
Illustrate an exothermic redox reaction by heating iron wool with chlorine, bromine and iodine with this demonstration. Includes kit list and safety instructions.
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DemonstrationReactivity trends of the alkali metals
Use this experiment to demonstrate the trend in reactivity down group 1 of the Periodic Table, exploring the physical and chemical properties of the alkali metals.
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Demonstration‘Magic’ writing with colour changing reactions
Reveal invisible messages or pictures drawn with aqueous solutions by spraying them with suitable reagents in this demonstration. Includes kit list and safety instructions.
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DemonstrationFloating and sinking bubbles
Make bubbles of carbon dioxide, hydrogen or methane in this demonstration exploring density, diffusion and solubility. Includes kit list and safety instructions.
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DemonstrationSodium ethanoate ‘stalagmite’
Quickly grow your own ‘stalagmite’ from a supersaturated solution of sodium ethanoate in this demonstration. Includes kit list and safety instructions.
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DemonstrationA hydrogen powered rocket
Try this spectacular demonstration to make a rocket using a plastic drink bottle fuelled by hydrogen and air. Includes kit list and safety instructions.
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DemonstrationThe ‘whoosh’ bottle demonstration
This exciting demonstration is a combustion reaction where a mixture of alcohol and air in a large bottle is ignited. Includes kit list and safety instructions.
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DemonstrationThe density of ice
Demonstrate to students what happens as ice cubes floating on oil start to melt and the density of the water changes. Includes kit list and safety instructions.
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DemonstrationThe sublimation of air freshener | 11–14 years
Use this experiment to demonstrate sublimation, showing how solid air freshener changes directly from a solid to a gas. Includes kit list and safety instructions.
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DemonstrationA solid–solid reaction between lead nitrate and potassium iodide
Use this demonstration with kit list and safety instructions to prove that two solids can react together, making lead iodide from lead nitrate and potassium iodide.