Term
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Definition
-Attractive forces between molecules.
-Much weaker than chemical bonds.
-(Van Der Waals Forces) |
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Term
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Definition
| Attraction between 2 instantaneous dipoles |
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Term
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Definition
| Asymmetrical electron distribution |
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Term
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Definition
| Dispersion with all atoms and moles. |
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Term
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Definition
| Attraction between polar molecules (permanent dipoles also) |
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Term
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Definition
Attractionm between molecules with N-H, O-H, F-H bonds
-Extremely polar bonds |
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Term
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Definition
| Increases in strength as molar mass increases |
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Term
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Definition
| Created by equal but opposite charges that are seperated by a short distance. |
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Term
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Definition
| Attractive force between particles in a liquid that minimizes surface area. |
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Term
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Definition
| Attractive force between the surface of a liquid and the surface of a solid. |
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Definition
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Definition
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Definition
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Definition
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Term
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Definition
| Molecules at the surface gain enough energy to overcome IMF. |
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Term
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Definition
| Measure of evaporation rate |
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Term
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Definition
| trapped molecules reach a balance between evaporation and condensation |
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Term
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Definition
| Pressure of water vapor above a liquid at equilibrium |
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Term
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Definition
| Temperature at which vapor pressure of liquid equals external pressure. |
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Definition
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Term
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Definition
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Term
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Definition
| Solid,Melting,Liquid,Boiling,Gas |
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Term
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Definition
| Energy required to raise the temperature of 1 gram of a substance by 1 C. |
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Term
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Definition
Change in molecular arrangement.
-temp. remains constant |
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Term
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Definition
| Energy required to melt 1 gram of a substance at its m.p. |
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Term
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Definition
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Term
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Definition
| The temperature above which the substance can no longer exist as a liquid. |
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Term
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Definition
| The lowest pressure that a substance can exist as a liquid at the critical temperature. |
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Term
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Definition
| Indicates the critical temperature & pressure. |
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Term
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Definition
| Conditions of temperature & pressure at solid, liquid, and vapor can coexist at equilibrium. |
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Term
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Definition
| Substances that retain certain liquid properties even at temperatures at w hich they appear to be solid. |
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Term
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Definition
| Total 3D arrangement of crystal particles. |
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Term
| Volatile liquids _______- |
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Definition
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Term
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Definition
| When a system at equilibrium is distributed by application of a stress, it attains a new equilibrium position that minimizes the stress. |
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Term
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Definition
Consists of positive & negative ions arranged in a regular pattern.
-Group 1 or Grtoup 2 + Group 16 or Group 17
-hard,brittle,high M.P., good insulators |
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Term
| Covalent network crystals |
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Definition
Contain single atoms
-covalent bonding extends thoroughout network
-large number of atoms
-diamonds,quartz,silicon carbide
-hard,brittle,high m.p.s, nonconductors or semiconductors |
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Term
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Definition
consists of metal atoms surrounded by a sea of valence electrons
-m.p.s vary greatly
-freedom of outer structure electrons |
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Term
| Covalent molecular crystals |
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Definition
covalently bonded molecules held together by intermolecular forces
-low m.p,s
-relatively soft
-good insulators |
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