Polarity (chemistry) | Wikipedia audio article
Channel: wikipedia tts
Date: 18/02/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Chemical_polarity


00:00:59 1 Polarity of bonds
00:02:55 1.1 Classification
00:05:29 2 Polarity of molecules
00:05:47 2.1 Polar molecules
00:06:55 2.2 Nonpolar molecules
00:10:51 2.3 Amphiphilic molecules
00:11:17 3 Predicting molecule polarity
00:13:24 4 Electrical deflection of water
00:14:06 5 See also
00:15:48 6 References
00:16:42 7 External links



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SUMMARY
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In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment, with a negatively charged end and a positively charged end.
Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms. A polar molecule with two or more polar bonds must have a geometry which is asymmetric in at least one direction, so that the bond dipoles do not cancel each other.
Polar molecules interact through dipole–dipole intermolecular forces and hydrogen bonds. Polarity underlies a number of physical properties including surface tension, solubility, and melting and boiling points.