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14 Cards in this Set
- Front
- Back
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intermolecular force |
forces of attraction between (not within) molecules
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boiling point |
temperature at which vapor pressure = atmospheric pressure dis |
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dispersion force |
an intermolecular attraction between non-polar molecules *weakest intermolecular force |
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normal boiling point |
the temperature at which the vapor pressure of a substance is equal to 1 atm or 101.3 kPa |
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colligative properties |
physical properties that are affected by the number of particles dissolved ex: boiling point, freezing point, vapor pressure |
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dipole |
a molecule with “sticky ends”; one end is positively charged the other is negatively charged ex: H2O |
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dipole force |
an intermolecular attraction between polar molecules *second strongest intermolecular force |
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dispersion force |
an intermolecular attraction between non-polar molecules *weakest intermolecular force |
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distillation |
a process that separates a mixture of substances with difference in boiling points |
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equilibrium |
a stable situation that occurs when the rate of a forward reaction is equal to the rate of a reverse reaction |
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hydrogen bond |
- a strong intermolecular attraction between molecules which contain hydrogen and an electronegative element (such as nitrogen, oxygen or fluorine) - causes strong surface tension and high boiling point |
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malleability |
- the ability of a substance to be shaped/hammered into thin sheets - property of most metals |
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melting point |
the temperature at which a solid is in equilibrium with its liquid phase (same temperature as freezing point) |
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non-polar molecule |
a molecule with an even distribution of charge - no positive or negative “sticky ends” ex: CH4 (methane)
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