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Recrystallization (chemistry)
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<p>Recrystallization is a broad class of <a href="/facts/List_of_purification_methods_in_chemistry/fSh2XHfh"> chemical purification</a> techniques characterized by the dissolution of an impure sample in a <a href="/facts/Solvent/LoMPMz8S">solvent</a> or solvent <a href="/facts/Mixture/tms8rbmn">mixture</a>, followed by some change in conditions that encourages the formation of pure isolate as solid <a href="/facts/Crystals/e2R2mk3E">crystals</a>. Recrystallization as a purification technique is driven by <a href="/facts/Spontaneous_process/xyGhdUG0"> spontaneous processes</a> of <a href="/facts/Molecular_self-assembly/DhU6CEYL"> self-assembly</a> that leverage the highly ordered (i.e. low-<a href="/facts/Entropy/s52IXeFz">entropy</a>) and periodic characteristics of a crystal's molecular structure to produce purification. </p>