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30 Cards in this Set
- Front
- Back
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At which point do particles lose energy?
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Absolute zero
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What are intermolecular forces?
Description, not list. |
All particles have gravity.
The closer together, the more likely this is. Thus, in a gas, it's much lower. |
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What are intramolecular forces?
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Within the molecule.
VERY strong. Keeps a molecule together |
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What are the three types of intermolecular forces?
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Dispersion force
Dipole-Dipole Hydrogen Bonds |
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What is dispersion force?
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The weakest intermolecular force.
All molecules have it. Goes up depending on size more molecule. |
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Dipole-Dipole
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The force between polar molecules. Because they have two differently charged sides, they can attach to each other kind of like magnets.
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Elastic Collision
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When gas particles collide, they lose no total energy, though they might exchange it.
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Describe Ionic Compounds physically
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Crystalline solids at room temperature. Think of salt. There's a set order of how they stick, and they stick very much.
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Describe Ionic Compounds' properties
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Very high bp, mp, heat of vap, heat of fusion.
NO VAPOR PRESSURE, SINCE IT'S A SOLID |
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Instantaneous Di-polarity
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As two molecules pass, they might be attracted to each other for ~1/10000000000000000000000000th of a second. Rough guess.
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Polarizability
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The ease of which a molecule becomes an instantaneous dipole
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Hydrogen bonds occur between H and what?
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FON
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What is the strongest intermolecular bond?
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H- Bond
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4 types of solid?
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Metallic (metal)
Molecular (nonmetal + nonmetal) Ionic (metal + nonmetal) Covalent Network (all C) |
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What is a molecular solid?
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All nonmetals. Can be a single non-metal, diatomic, or hydrocarbon.
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What is characteristic of metallic solids?
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Strong bonds
Solid @ room temp Consist of only a metal in it's equation High bp, mp |
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What is characteristic of ionic solids?
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They are solid at room temperature, and they fit together like puzzle pieces.
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Do solids conduct electricity?
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Ionic do not, but metals do.
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Covalent Network
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all carbon
All covalently bonded Uber high boiling and melting point (think of melting diamond) |
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What is fusion another term for?
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Melting
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Condensation
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Gas becomes a liquid. It condenses..
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Deposition
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Gas turns to a solid right away w/o Liquid state
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What is dry ice?
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Solid Carbon Dioxide
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What are the two covalent networks?
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Graphite
Diamond |
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nh3
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Ammonia
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What are the two most important temperatures for H20?
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0 degrees
100 degrees |
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What is /\H of vaporization?
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2260
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What is /\H of fusion?
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334
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How do you find energy required to melt/boil something?
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q = m * /\H
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How do you find energy required to change temperature?
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q = m * 4.18 * /\T
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