13775832
Beschreibung
Karteikarten von Lily Chapman, aktualisiert more than 1 year ago
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Erstellt von Lily Chapman
vor mehr als 8 Jahre
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| Frage | Antworten |
| Features of solids | -Atoms/molecules arranged to need the lowest possible energy -Some solids can have more than one possible arangement |
| Graphite and diamond | Graphite and diamond have different properties even though they are both made up of carbon atoms. This is due to the bonds between the atoms. |
| Metals- properties | -Metals have little difference in electronegativity -Will share electrons giving them conductive properties (sea of electrons) |
| London (dispersion forces) | -A (temporary) dipole is induced as there is a positive and negative end as electrons move -Very weak forces -Holds liquids together -Common to all molecules |
| Dipole-dipole forces | -Permanent dipoles in molecules due to a difference in their electronegativity -Weak force |
| Hydrogen bonding | -Does not involve a chemical bond -Involves a strong dipole-dipole interaction -Occurs between H and strongly electronegtive elements (F,O,N) -Much weaker than covalent bond |
| Features of liquids | -Greater mobility than solids -Greater K.E. -Weaker intermolecular interactions -Chemical reactions occur faster |
| Features of polymers | -Made of repeating units -Have a monomer repeated n times |
| Polymer examples | -PVC -PE -PMMA |
| Polymer reactions | -Addition -Condensation: Results in production of a polymer and small molecule (H20, HCl) |
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