All Experiment articles – Page 3
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ExperimentAcid or alkali? Acidic or alkaline? A litmus paper test
Test a variety of substances to see if they are acidic or alkaline, using litmus paper as the indicator. Includes kit list and safety instructions.
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Experiment
Separating sand and salt by filtering and evaporation
Try this class experiment to practise manipulating mixtures of soluble and insoluble materials by separating sand and salt. Includes kit list and safety instructions.
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Experiment
Burning money: what makes combustion happen?
Surprise your students by soaking a piece of paper (or an old £5 note) in ethanol and water and igniting it. Includes kit list and safety instructions.
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Experiment
Exploding 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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Experiment
Chemiluminescence of luminol: a cold light experiment
Show how the energy of a chemical reaction can be given out as light by revealing how a solution of sodium chlorate(I) oxidises an aqueous solution of luminol (3-aminophthalhydrazide) to produce a blue chemiluminescent glow – without any increase in temperature.
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Experiment
Cracking 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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Experiment
Iron and sulfur reaction
This demonstration or class experiment shows the exothermic reaction of iron and sulphur. Includes kit list and safety instructions.
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Experiment
Turning ‘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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Experiment
Heating 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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Experiment
Ammonia 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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Experiment
Determining 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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Experiment
Electrolysis 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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Experiment
Making a mirror using silver nitrate and sugar
Try this practical to make a mirror with your students using the reaction between silver nitrate and glucose. Includes kit list, video and safety instructions.
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Experiment
Halogen 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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Experiment
Reactivity 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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Experiment
‘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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Experiment
Floating 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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Experiment
Sodium 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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Experiment
Flame colours: a demonstration
Show the flame colours of alkali metals, alkaline earth metals, and other metal salts by safely spraying sodium chloride, potassium chloride, lithium chloride, copper sulfate and ethanol through a bunsen flame.
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Experiment
Microscale extraction of copper
Try this practical to reduce copper(II) oxide to copper using hydrogen, revealing their positions in the reactivity series. Includes kit list and safety instructions.
