Periodic table articles – Page 3
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Opinion
Five ideas in chemical education that must die - part five
Eric Scerri explores outdated chemical concepts
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Feature
Exploding some myths
Declan Fleming investigates what’s really going on when alkali metals hit water
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News
Confirmation of buckyballs in the Milky Way
Gas-phase spectra clears up decades old mystery of unidentified absorption bands in our galaxy
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Analysis
Sinister caesium: the birth of a meme
Declan Fleming investigates the story behind the classic caesium explosion video
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Analysis
Alkali metals – the camera lies
Declan Fleming explains how Brainiac's faked explosions helped produce a great resource to stretch his students
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Experiment
The reaction of aluminium and copper(II) sulfate
Try this practical or demonstration to illustrate the displacement of copper from copper sulfate using aluminium foil, with kit list and safety instructions.
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Opinion
Five ideas in chemical education that must die - part three
Eric Scerri explores outdated chemical concepts
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Experiment
Allotropes of sulfur
Observe the changes in colour and consistency of sulfur as you heat it, melt it and eventually boil it.
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Experiment
Reactions of chlorine, bromine and iodine with aluminium
Produce some spectacular exothermic redox reactions by reacting aluminium with halogens.
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Experiment
Halogens in aqueous solution and their displacement reactions
Explore the chemical properties of halogens using this demonstration or class experiment. Includes kit list and safety instructions.
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Experiment
The position of iron in the reactivity series
This experiment shows the position of iron in the reactivity series, by heating iron metal with the oxides of two other metals, copper and magnesium.
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Experiment
Preparing salts by neutralisation of oxides and carbonates
Try these class experiments to illustrate the production of soluble salts from insoluble metal oxides and carbonates. Includes kit list and safety instructions.
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Experiment
Reacting magnesium with copper(II) oxide
Illustrate reduction, oxidation and the relative reactivity of magnesium and copper(II) oxide in this demonstration. Includes kit list and safety instructions.
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Experiment
Liquefying chlorine gas
Liquefy gaseous chlorine by passing it over a ‘cold finger’ condenser using a dry ice/ethanol mixture and compare it with bromine and iodine in their condensed state as part of a study of the trends in the physical properties of the halogens.
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Experiment
Extracting iodine from seaweed
Discover how ribbon seaweed (or kelp) can be used as a source of iodine in this demonstration or class experiment. Includes kit list and safety instructions.
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Experiment
Where does carbon come in the reactivity series?
The position of carbon in the reactivity series is determined by heating carbon with metal oxides and looking for evidence of a reaction.
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News
Boron and beryllium finally shake hands
Never-before-seen bond observed between periodic table neighbours
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The Mole
Chemistry is like… The Simpsons
The world’s favourite animated family gives us an interesting way to view chemistry. Tom Husband explains
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Feature
Unwitting artists
Is there art in chemical structures and diagrams? Jennifer Newton looks at the aesthetics all around us