What is the shape of a molecule? - George Zaidan and Charles Morton
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Not SyncedWhat is the shape of a molecule?
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Not SyncedWell, a molecule is mostly empty space.
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Not SyncedAlmost all of its mass is concentrated
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Not Syncedin the extremely dense nuclei of its atoms.
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Not SyncedAnd its electrons,
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Not Syncedwhich determine how the atoms
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Not Syncedare bonded to each other,
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Not Syncedare more like clouds of negative charge
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Not Syncedthan individual, discrete particles.
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Not SyncedSo, a molecule doesn't have a shape
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Not Syncedin the same way that, for example,
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Not Synceda statue has a shape.
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Not SyncedBut for every molecule,
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Not Syncedthere's at least one way
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Not Syncedto arrange the nuclei and electrons
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Not Syncedso as to maximize the attraction
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Not Syncedof opposite charges
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Not Syncedand minimize the repulsion
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Not Syncedof like charges.
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Not SyncedNow, let's assume that the only electrons
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Not Syncedthat matter to a molecule's shape
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Not Syncedare the outermost ones from each participating atom.
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Not SyncedAnd let's also assume
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Not Syncedthat the electron clouds in between atoms,
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Not Syncedin other words, a molecule's bonds,
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Not Syncedare shaped kind of like sausages.
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Not SyncedRemember that nuclei are positively charged
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Not Syncedand electrons are negatively charged,
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Not Syncedand if all of the molecule's nuclei
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Not Syncedwere bunched up together
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Not Syncedor if all of its electrons were bunched up together,
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Not Syncedthey would just repel each other and fly apart,
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Not Syncedand that doesn't help anyone.
- Title:
- What is the shape of a molecule? - George Zaidan and Charles Morton
- Description:
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View full lesson: http://ed.ted.com/lessons/what-is-the-shape-of-a-molecule-george-zaidan-and-charles-morton
A molecule is nearly all empty space, apart from the extremely dense nuclei of its atoms and the clouds of electrons that bond them together. When that molecule forms, it arranges itself to maximize attraction of opposite charges and minimize repulsion of unlike. George Zaidan and Charles Morton shape our image of molecules.
Lesson by George Zaidan and Charles Morton, animation by Bevan Lynch.
- Video Language:
- English
- Team:
- closed TED
- Project:
- TED-Ed
- Duration:
- 03:48
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Andrea McDonough edited English subtitles for What is the shape of a molecule? - George Zaidan and Charles Morton |