Attractive or repulsive interactions that occur between all atoms and molecules. Intermolecular forces become significant at molecular separations of about 1 nanometer or less, but are much weaker than the forces associated with chemical bonding. They are important, however, because they are responsible for many of the physical properties of solids, liquids, and gases. These forces are also largely responsible for the three-dimensional arrangements of biological molecules and polymers.
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Describe the attractive and repulsive forces that exist between two atoms as the atoms move closer togther.
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The force is repulsive when the molecules are brought close enough together that the outer charge clouds of the molecules touch, and this causes the molecules to repel each other. The repulsive forces are necessary so that the molecules do not destroy each other.
The forces that bring molecules together are called forces of attraction. These forces include cohesion, the attraction of like molecules, and adhesion, the attraction of unlike molecules. Attractive forces are divided into two groups: strong forces and weak forces. The weak forces of attraction are: Van der Waals forces, Ion-dipole forces, and Hydrogen bonds. The strong forces include the Ionic and Covalent bonds.
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The forces that bring molecules together are called forces of attraction. These forces include cohesion, the attraction of like molecules, and adhesion, the attraction of unlike molecules. Attractive forces are divided into two groups: strong forces and weak forces. The weak forces of attraction are: Van der Waals forces, Ion-dipole forces, and Hydrogen bonds. The strong forces include the Ionic and Covalent bonds.
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