Molecule soaplike

Micelle (Section 27.2) A spherical cluster of soaplike molecules that aggregate in aqueous solution. The ionic heads of the molecules lie on the outside, where they are solvated by water, and the organic tails bunch together on the inside of the micelle. 

But soaplike molecules, molecules that have an attraction to both waterlike substances and oil-like substances, have a much more important role than cleaning skin they form the walls of the very cells of the skin. Intermolecular forces may at first seem relatively unimportant when compared to chemical bonds, but while chemical bonds determine the structure of a single molecule, it is intermolecular forces that will determine how this molecule will behave around other molecules. And the behavior of molecules, as observed in the properties of molecular substances and mixtures, is what life is all about. 

Friedel (7) chose the name smectic, from the Greek, smectos (soaplike), because these phases have certain properties reminiscent of those found in many soaps. In the smectic phase the molecules are arranged side by side in a series of layers. In some cases the molecules within the individual layers are arranged in rows, but in other materials they are randomly distributed. In either case, however, the long axes of all the molecules in a given layer are approximately parallel and are perpendicular or almost perpendicular to the plane of the layers. The layers may in some cases be two molecules thick, in other cases only one molecule thick (11). 

Finally, an even richer set of phenomena and applications is related to the behavior of self-assembling colloids as shown in Fig. 1.4. In such systems, generally composed (soaplike) molecules in solution, the colloidal... 

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