polar molecule


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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.

polar molecule

[′pō·lər ′mäl·ə‚kyül]
(physical chemistry)
A molecule having a permanent electric dipole moment.
References in periodicals archive ?
Both mechanisms produce friction between near molecules, as polar molecules straighten in within the electromagnetic field and as ions move within the electric field [22].
A polar molecule is a molecule that has a slightly positive encl and a slightly negative end.
For chemical composition, it is interesting to note that polar molecules perform better in MW.
The 12 lectures identify new directions in the field of ultracold physics, such as quantum gases with long range interactions, either due to strong magnetic dipole forces, due to Rydberg excitations, or, for polar molecules due to electric dipole interactions; quantum gases in lower dimensions; quantum gases with disorder; atoms in optical lattices, now with single-site optical resolution; systems with non-trivial topological properties such as spin-orbit coupling or in artificial gauge fields; quantum impurity problems (Bose and Fermi polarions); and quantum magnetism.
It is generally agreed that the charge carriers must be present in inverse micelles, surrounded by other polar molecules.
The material to be treated is conveyed through an electrode array where this alternating energy causes polar molecules in the material to continuously reorient themselves to face opposite poles much like the way bar magnets behave in an alternating magnetic field.
Like other polar surfaces, titanium (iv) oxide has the tendency to adsorb polar molecules including water molecules.
Microwave fields are a form of electromagnetic energy, and its interaction with charged particles and polar molecules leads to their agitation, which is defined as heat [11].
Moreover, the resistance to small polar molecules, which is seldom studied in the previous researches, was investigated in this work.
Gas hydrate is a crystalline water-based solid physically resembling ice, in which small non-polar molecules (typically gases) or polar molecules with large hydrophobic moieties are trapped inside 'cages' of hydrogen-bonded water molecules.
Smaller crude oil fractions, in which polar molecules are smaller than water molecules, lose their ability to penetrate gel pores by means of molecular sieve.