All Analysis articles – Page 6
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ExperimentTesting for catalase enzymes
Try this class experiment to detect the presence of enzymes as they catalyse the decomposition of hydrogen peroxide. Includes kit list and safety instructions.
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Experiment
A test to distinguish between ethanol and methanol
A class practical to distinguish between methanol and ethanol using the iodoform reaction. Includes kit list, safety instructions, procedure and teaching notes.
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Experiment
Testing the hardness of water
Try this practical with your students to measure the hardness of water samples and investigate the effect of boiling. Includes kit list and safety instructions.
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Experiment
Unsaturation in fats and oils
Use this class practical to investigate the amounts of unsaturated fats and oils in different foods. Includes kit list and safety instructions.
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News
Purely inorganic aromatic ion synthesised
Aromatic anion made from nitrogen and phosphorus synthesised
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Experiment
Identifying the products of combustion
Illustrate the presence of water and carbon dioxide in the products of hydrocarbon combustion in this demonstration. Includes kit list and safety instructions.
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Experiment
Chromatography of sweets
Try this class practical to carry out chromatography using dye from different coloured Smarties® or M&M’S®. Includes kit list and safety instructions.
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Experiment
Silver and lead halides
Try this practical or demonstration to produce silver and lead halides in a series of precipitation reactions. Includes kit list and safety instructions.
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Resource
Problem based practical activities
A collection of 10 practical activities where students apply their understanding of a concept to devise a solution to a ‘real-life’ scenario.
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Feature
The impossible water sensor
Hundreds of different chemicals can ruin our water, so measuring their levels is vital. Josh Howgego investigates whether building sensors that can do the job cheaply and remotely will ever be possible
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Soundbite
Dual personality of light caught on camera
Is it a wave or is it a particle? We might know the answer, (Spoiler alert: it’s both!) but it is reassuring nonetheless to see the pictures that prove it, says Nina Notman
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Resource
Plastics conservation - Barbie and friends
This resource provides the essential knowledge needed to keep plastic pieces in the best possible condition so that they can continue to be enjoyed for many years.
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Resource
Which sodium salt is which?
Using laboratory tests identify sodium sulphate, sodium sulphite, sodium thiosulphate, sodium metabisulphite and sodium persulphate.
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Resource
Which gas is which?
In the beaker are test-tubes containing different gases - carbon dioxide, dinitrogen oxide, oxygen, chlorine and hydrogen. You may remove a test-tube only once and when you do so you must identify the gas immediately.
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Resource
Vintage titrations: tannin in wine
Determine the tannin concentration in the samples of wine and investigate the differences between red and white wine.
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Resource
Vintage titrations: sulfur dioxide concentrations in wine
Devise an analytical method to compare the amount of sulphur dioxide present in the samples of wine provided.
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Resource
Three isomeric alcohols
Identify three different alcohols which each have the formula C 4 H 10 O using standard laboratory tests.
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Resource
Only dust - is there a sign of life?
Determine whether the sample of dust originates from a living source or a non-living source and design a test for the dust sample that exploits a physical property of organic molecules from living sources, using only the equipment provided.
