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Surface tension
a quantitative measure of the elastic force in the surface of a liquid
Capillary action
movement of a liquid up a tube
Cohesion
attraction between like molecules
Adhesion
attraction between unlike molecules
Viscosity
resistance to flow
Boiling point
form of vaporization, dependent of atmospheric pressure
Amorphous
a solid that lacks regular three-dimensional arragement of atoms
Crystalline
a solid that possesses rigid and long-range order
Melting point
the temp at which solid and liquid phases are in equilibrium
Vaporization
the phase change from liquid to gas at the boiling point
Molar heat of the vaporization
the amount of heat required to vaporize a mole of substance at its boiling point
Critical temp.
the temperature at which the gas phase cannot be liquefied, no matter how great the applies pressure
Critical Pressure
the minimum pressure that must be applied to liquefy a substance at its critical temperature
Molar heat of Fusion
then energy, usually expressed in kJ/mol, required to melt 1 mole of a solid
Super cooling
phenomenon in which a liquid can be cooled below its freezing point
Sublimation
solid → gas
Deposition
the phase change from gas to solid
Phase diagrams
summarizes the conditions in temperature and pressure, which a substance exists
Triple point
where all three phases exist at the same time
Lattice Structure
arrangement of the particles in a crystalline solid
Note
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