Phase

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Author:
Zenmann13
ID:
81177
Filename:
Phase
Updated:
2011-04-22 17:08:03
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Phase
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Phase
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  1. a Phase
    a homogenous past of the system that is in contact with other parts of the system but separated from them by a well defined boundary.
  2. Dipole - dipole forces
    are attractive forces between polar molecules, that is, molecules that have dipole moments. Are the third strongest Van de Waals attractions.
  3. Ion- Dipole Forces
    attract an ion (either a cation or an anion) to a polar molecule. Are the second strongest type of Van de Waal's forces. Hydration is one example of ion-dipole bonding (N+, Mg2+ interacting with H2O)
  4. Dispersion forces
    also called London forces, attractive forces that as a result of temporary dipoles induced in atoms or molecules. In many cases dispersion forces are comparable to or even greater than the dipole-dipole forces between polar molecules. The larger the electron cloud, the higher the dispersion forces will be.
  5. Induced dipole
    the separation of positive and negative charges in the atom (or the non-polar molecule) is due to the proximity of an ion or a polar molecule. This is a type of dispersion force.
  6. Hydrogen bond
    a special kind of bond: a dipole-dipole interaction between the hydrogen in a polar bond such as N-H, O-H, F-H and on electronegative O, N, F atom.

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