BIOL 112 Lecture Notes - Ph, Amine, Molecular Mass
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BIOL 112 Full Course Notes
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Involves a complete transfer of one or more electrons. Ions are formed when an atom loses or gains electrons. Anions: negatively charged (-) ions: cation + anion salt. These bonds are formed with oppositely charged ions attracting one another: i. e. table salt, nacl, in water dissociates. The partial charges of water interfere with the ionic bonds and nacl dissociates: polar molecules are hydrophilic. These dissolve in water because of hydrogen bonding. Hydrophilic: water-loving , can produce hydrogen bonding: nonpolar molecules are hydrophobic. They can"t dissolve in water, but do dissolve in other nonpolar substances. Hydrophobic: afraid of water , cannot produce hydrogen bonding: hydrophobic interaction. Water forces nonpolar molecules together: reduces disruptive effects on hydrogen bonding amongst water molecules, van der waals interaction. All molecules attract to each other with this interaction. Caused by fluctuation in electrical charges [kind of hard to explain]