
Dorene O. answered 07/17/14
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The processes are ionization and dissociation. For example, take the compound sodium chloride. Sodium wants to give up an electron and Chloride wants to gain an electron; this puts both compounds in a very stable state with 8 electrons in the outermost shell. In water, the sodium ions and chloride ions easily dissociate and separate in the polar water solution. Ionic compounds like this dissolve in water because the water molecules are polar, with the electron cloud closer to the oxygen atom (oxygen is stable with two extra electrons) and the hydrogen atoms more like hydrogen ions. A polar solution like H2O makes it easy for the ions to dissociate.
Dorene O.