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Hydration
The process in which ions are surrounded by water molecules.
Dissociation
The separation of individual ions from an ionic compound as it dissolves in water.
Miscible
Substances that can mix together and dissolve to form a solution.
Immiscible
Substances that cannot mix to form a solution.
Like Dissolves Like
The general rule that polar substances dissolve polar substances and nonpolar substances dissolve nonpolar substances.
Surfactant
A compound that can reduce the surface tension of a solvent, having both a hydrophobic and a hydrophilic end.