Читать книгу Biochemistry For Dummies - John Moore T., Richard Langley H., John T. Moore - Страница 41

As the strength of forces decreases, so do the melting points, boiling points, and solubility in water. In addition, the vapor pressure and the solubility in nonpolar solvents increase.

Substances that have a high solubility in water are hydrophilic, and substances that have a low solubility in water are hydrophobic. You can get the scoop on solubility in the section.

A molecule may have both hydrophilic and hydrophobic regions. The region that represents a greater portion of the molecule predominates. For this reason, for example,

is more hydrophilic than

because the hydrophilic end (-COOH) is a much more significant portion of the entire molecule in the first case than in the second case.

In addition,

is more hydrophilic than

because of the presence of the second hydrophilic region .