All Structure and bonding articles – Page 12
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Exhibition chemistryRed hot carbon
Declan Fleming shows you how to capture your students’ imaginations with spectacular demonstrations
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ResourceSwimming pool chemistry | 16–18 years
Synoptic questions explore structure and bonding, equilibrium and spectrometry and spectroscopy in the context of swimming pools
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ResourceShapes of molecules and ions
This activity draws some extra concepts and mathematical skills into the discussion of molecular shape. A distinction between geometry around the central atom and the shape of the molecule is made.
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ResourceOxidation numbers
This activity introduces oxidation numbers by giving a conceptual foundation for them in terms of electron accounting and polar bonds. It then shows how the model used so far needs refining.
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ResourceFormal charge
This activity introduces formal charge – a useful tool which otherwise might not be taught. The formal charge model treats bonds as pure covalent, in contrast to the oxidation state model which treats bonds as ionic.
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ResourceCovalent bonding
This activity seeks to develop an understanding of covalent bonding in terms of energetic stability rather than full shells.
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ResourceCarbon - the element with several identities
The student worksheet includes information about Sir Harry Kroto, one of the team who discovered the third allotrope of carbon, buckminsterfullerene.
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ResourceElements infographics
A collection of visually stimulating and informative infographics about the elements, which would make a valuable addition to any science classroom.
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ResourceEducation in Chemistry: molymod competition worksheets
We are pleased to announce the winners of the 2013 Education in Chemistry molymod competition. The winning worksheet was designed by Mary Wong, with Catherine Smith and Matthew Standford coming in as runner-ups.
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ResourceWhat is honey made of? The optical rotation of sugars
Discover more about carbohydrates, chirality, optical rotation, in honey. Includes kit list and safety instructions.
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ResourceOnly dust - is there a sign of life?
Discover the link between organic life, and dust, designing an experiment of your own from junk materials. Includes kit list and safety instructions.
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ResourceLiquid and solid water; the growth of ice crystals
On a cold clear night, the Earth loses heat by radiation. How does a natural pond form ice through the night? Includes kit list and safety instructions.
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NewsSuper-dipoles create chloroform’s super powers
Polar stacks facilitate dissolution by polarising
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The MoleChemistry is like… dating
Tom Husband thinks about how chemical bonding might be similar to personal relationships
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FeaturePictures of the molecular world
Matthew Lickiss looks back at how our drawings of chemical structures have changed over time
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ResourceKhan Academy: Stereochemistry
These video resources from the Khan Academy give clear explanations of the difficult concept of stereochemistry. NOTE: All Khan Academy content is available for free at www.khanacademy.org Video: Stereochemistry: Cahn-Ingold-Prelog System Video: Stereochemistry: Cahn-Ingold-Prelog Naming System Example 2 Video: Stereochemistry: ...
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Exhibition chemistryPerturbed polymers
Declan Fleming shows you how to capture your students’ imaginations with spectacular demonstrations
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NewsModels contend iodine double bonds
Theoretical studies replace double bonds with dative in hypervalent iodine compounds