21. Though water is a very polar molecule , alkanes and other hydrophobic molecules are more polarizable. 22. The oscillation of polar molecules produces frictional heating, ultimately generating tissue necrosis within solid tumors. 23. Examples of polar molecules include hydrogen chloride ( HCl ) and chloroform ( CHCl 3 ). 24. Polar molecules have a net attraction between them.25. This stationary phase will adsorb polar molecules which can be collected with a more polar solvent. 26. This kind of interaction can be expected between any polar molecule and non-polar / symmetrical molecule. 27. However polarity also requires geometric asymmetry, or else dipoles may cancel out resulting in a non-polar molecule . 28. Typical solvents for ionic polymerization include non-polar molecules such as pentane, or moderately polar molecules such as chloroform. 29. The smallest polar molecule is water. 30. Typical solvents for ionic polymerization include non-polar molecules such as pentane, or moderately polar molecules such as chloroform.
