( ( Fractional ( Crystallization ( Fractional crystallization ) ) ) ( ( is ( ( a method ) ( of ( ( ( ( ( separating ( ( a mixture ) ( of ( soluble solids ) ) ) ) ( by ( ( dissolving them ) ( in ( a ( suitable ( hot solvent ) ) ) ) ) ) ) and ) then ) ( ( lowering ( the temperature ) ) slowly ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Fractional) (NNP Crystallization) (NNP Fractional) (NNP crystallization)) (VP (VBZ is) (NP (NP (DT a) (NN method)) (PP (IN of) (S (VP (VP (VBG separating) (NP (NP (DT a) (NN mixture)) (PP (IN of) (NP (JJ soluble) (NNS solids)))) (PP (IN by) (S (VP (VBG dissolving) (NP (PRP them)) (PP (IN in) (NP (DT a) (JJ suitable) (JJ hot) (NN solvent))))))) (CC and) (ADVP (RB then)) (VP (VBG lowering) (NP (DT the) (NN temperature)) (ADVP (RB slowly)))))))) (. .)))
Fractional Crystallization Fractional crystallization is a method of separating a mixture of soluble solids by dissolving them in a suitable hot solvent and then lowering the temperature slowly.
(ROOT (S (NP (JJ Fractional) (NN crystallization)) (VP (VBZ is) (NP (NP (DT the) (NN separation)) (PP (IN of) (NP (NP (NNS compounds)) (PP (IN on) (NP (NP (DT the) (NN basis)) (PP (IN of) (NP (PRP$ their) (NNS solubilities))))))) (PP (IN in) (NP (DT a) (VBN given) (NN solvent))))) (. .)))