The varicella zoster virus that causes chickenpox is the same virus that causes shingles. After a person experiences the chicken pox, the varicella zoster virus remains in the body in an inactive state near nerve tissue. At a later time, for unknown reasons, the virus reactivates and causes shingles.
In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment. Polar molecules interact through dipoleâdipole intermolecular forces and hydrogen bonds. Molecular polarity is dependent on the difference in electronegativity between atoms in a compound and the asymmetry of the compound's structure. Polarity underlies a number of physical properties including surface tension, solubility, and melting and boiling points.
Home Â» Polar molecule. Definition. noun, plural: polar molecules. A molecule with a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from polar bonds arranged asymmetrically. Supplement. Molecules can either be polar or nonpolar depending on the arrangement of bonds producing a net dipole. Water is an example of a polar molecule since it has a slight positive charge on one side and a slight negative charge on the other. The dipoles do not cancel out resulting in a net dipole.