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Could you explain van der Waals' forces to me, and their role in why energy is needed to vaporize water? Asked by: Undisclosed; Answer; It is important to remember that van der Waals' forces are forces that exist between MOLECULES of the same substance.
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www.physlink.com/ae206.cfm
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Molecules can attract each other at moderate distances and repel each other at close range. The attractive forces are collectively called "van der Waals forces". Van der Waals forces are much weaker than chemical bonds, and random...
http://antoine.frostburg.edu/chem/senese/101/liquids/fa...
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This page explains the origin of the two weaker forms of intermolecular attractions - van der Waals dispersion forces and dipole-dipole attractions. If you are also interested in hydrogen bonding there is a link at the bottom of the page. ... van der Waals forces: dispersion forces...
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www.chemguide.co.uk/atoms/bonding/vdw.html
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A description of the Van der Waals' Forces that create weak intermolecular interactions. ... Definition: Van der Waals' forces are a group of relatively weak intermolecular interactions which generally result when a molecule or group of molecules become polarized into a magnetic dipole. This happens most often due to uneven...
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physics.about.com/od/glossary/g/vdwaalsforce.htm
physics.about.com/od/glossary/g/vdwaalsforce.htm
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AKA: London force, dispersion force; The weakest of the imtermolecular forces. Present on all particles and increasing strength with increasing size. Results from the fact that a preponderance of electrons can end up on one side of an atom.
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www.biochem.northwestern.edu/holmgren/Glossary/Definiti...
www.biochem.northwestern.edu/holmgren/Glossary/Definitions/Def-V/Van_der_Waals_force.html
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Britannica online encyclopedia article on van der Waals forces (chemistry and physics), relatively weak electric forces that attract neutral molecules to one another in gases, in liquefied and solidified gases, and in almost all organic liquids and solids. ... Van der Waals forces may arise from three sources. First,
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www.britannica.com/EBchecked/topic/622645/van-der-Waals...
www.britannica.com/EBchecked/topic/622645/van-der-Waals-forces
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Adrian Parsegian - Van Der Waals Forces: A Handbook for Biologists, Chemists, Engineers, and Physicists ... Solids held together by van der Waals forces typically have lower melting points and are softer than those held together by ionic, covalent, ... For more information on van der Waals forces, visit Britannica.com.
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www.answers.com/topic/van-der-waals-force
www.answers.com/topic/van-der-waals-force
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Van der Waals forces act only over relatively short distances, and are proportional to the inverse of the seventh power of the intermolecular distances. The forces are important in the mechanics of ADHESION . (235 )
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palimpsest.stanford.edu/don/dt/dt3669.html
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Intermolecular force - Wikipedia, the free encyclopedia
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In physics, chemistry, and biology, intermolecular forces are forces that act between stable molecules or between functional groups of macromolecules. Intermolecular forces include momentary attract...
en.wikipedia.org/wiki/Intermolecular_force
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