( ( ( ( Use ( ( ( ( ( ( ( ( the ( terms element ) ) , ) compound ) , ) ( homogeneous mixture ) ) , ) and ) ( heterogeneous mixture ) ) ) , ) ( to ( describe ( common materials ) ) ) ) . )
(ROOT (S (VP (VB Use) (NP (NP (DT the) (NNS terms) (NN element)) (, ,) (NP (NN compound)) (, ,) (NP (JJ homogeneous) (NN mixture)) (, ,) (CC and) (NP (JJ heterogeneous) (NN mixture))) (, ,) (S (VP (TO to) (VP (VB describe) (NP (JJ common) (NNS materials)))))) (. .)))
Use the terms element, compound, homogeneous mixture, and heterogeneous mixture, to describe common materials.
(ROOT (S (NP (NNS Heterogeneous)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT a) (NN mixture)) (SBAR (WHNP (WDT that)) (S (VP (VBZ varies) (PP (IN in) (NP (PRP$ its) (NN composition)))))))))) (. .)))