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polar molecule |
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polar molecule [′pō·lər ′mäl·ə‚kyül] (physical chemistry) A molecule having a permanent electric dipole moment. Polar molecule A molecule possessing a permanent electric dipole moment. Molecules containing atoms of more than one element are polar except where forbidden by symmetry; molecules formed from atoms of a single element are nonpolar (except ozone). The dipole moments of polar molecules result in stronger intermolecular attraction, increased viscosities, higher melting and boiling points, and greater solubility in polar solvents than in nonpolar molecules. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| If you were to coat your skin with lotion that contained polar molecules, it would pull the moisture right out of your epidermis. The non-exposed surface is very rich in low molecular weight fractions of polar molecules containing sulfur, nitrogen and oxygen in the form of carbonyl, or hydroxyl. Now, two teams report success in controlling simple polar molecules by cooling and then orienting them in an electric field. |
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