Why is polarity a key connection between the structure of a molecule and its properties?

The intermolecular force of the molecule is determined by the polarity of the molecule and hence the physical properties of a molecule are affected. As polar molecules would have stronger intermolecular forces than non-polar molecules, they have higher boiling points, freezing points and surface tension. Further, a polar molecule would retain an assymmetrical structure while non-polar molecules will be symmetrical. Hence polarity determines structure of molecules and its properties.

Theoretical temperature at which molecules stop moving and no more heat can be removed from the object. kelvin: absolute zero degrees. none of the above.