All Atoms and bonds articles – Page 6
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Formal 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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Covalent bonding
This activity seeks to develop an understanding of covalent bonding in terms of energetic stability rather than full shells.
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Ionic bonding
An explanation often given for ionic bonding is that atoms lose or gain electrons to achieve noble gas configurations. This activity evaluates that as a complete explanation.
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Bonding models
This activity gets the students to think of the model they have been taught as a model rather than the truth.
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Atoms, elements, molecules, compounds and mixtures
This activity is designed to help students clarify the relationship between atoms, elements, molecules, compounds and mixtures. It also develops the skill of using Venn diagrams in organising their understanding.
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The atom detectives
This resource presents chemists as real people and not stereotypical ‘mad scientists’ whose lives are completely dominated by science.
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Liquid and solid water; the growth of ice crystals
Design an experiment to measure the rate at which ice freezes (or melts) ands use the findings to investigate how ponds freeze.
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News
Super-dipoles create chloroform’s super powers
Polar stacks facilitate dissolution by polarising
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The Mole
Chemistry is like… dating
Tom Husband thinks about how chemical bonding might be similar to personal relationships
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Feature
Pictures of the molecular world
Matthew Lickiss looks back at how our drawings of chemical structures have changed over time
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News
Hollow oxide can take the heat
Aluminium-based coating could protect metal components from heat, oxidation
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News
Boron and beryllium finally shake hands
Never-before-seen bond observed between periodic table neighbours
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News
Iridium forms compound in +9 oxidation state
Iridium oxide cation made by pulsed-laser vaporisation in the gas phase
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Resource
Atmospheric chemistry by danceroom Spectroscopy (dS)
A series of short videos presented by Dr David Glowacki within an interactive dome called danceroom Spectroscopy (dS).
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