5C Molecular Interactions

Molecular Polarity and Nonpolarity

Determining whether a molecule is polar or nonpolar requires a careful study of the geometry of the molecule. In some instances, would-be dipoles balance each other out to make the molecule, as a whole, nonpolar. Duration: 7:04

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The slightly negative side of one dipole may be attracted to the slightly positive side of another dipole. This attraction is called the dipole-dipole attraction. The special case of the hydrogen bond is also discussed. Duration: 8:19.

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Ways To Think About Density

Density is a measure of how compact a material is. The greater the density, the more mass is squeezed into a particular volume. Mathematically, density is expressed as the ratio of mass to volume. Duration: 8:06.

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