( ( ( A substance ) ( that ( ( can not ) ( be ( ( decomposed ( by ( any ( chemical reaction ) ) ) ) ( into ( simpler substances ) ) ) ) ) ) ) ( ( is ( called ( ( ( A ( -LRB- ( Element -RRB- ) ) ) , ) ( ( ( ( ( B ( -LRB- ( Compounds -RRB- ) ) ) , ) ( C ( -LRB- ( ( ( ( ( Homogeneous Mixture ) , ) or ) Solution ) -RRB- ) ) ) ) , ) ( D ( -LRB- ( ( Heterogeneous Mixture ) -RRB- ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB be) (VP (VBN decomposed) (PP (IN by) (NP (DT any) (NN chemical) (NN reaction))) (PP (IN into) (NP (JJR simpler) (NNS substances))))))))) (VP (VBZ is) (VP (VBN called) (NP (NP (DT A) (-LRB- -LRB-) (NN Element) (-RRB- -RRB-)) (, ,) (NP (NP (NP (NNP B)) (PRN (-LRB- -LRB-) (NP (NNP Compounds)) (-RRB- -RRB-))) (, ,) (NP (NP (NNP C)) (PRN (-LRB- -LRB-) (NP (NP (NNP Homogeneous)) (NP (NNP Mixture)) (, ,) (CC or) (NP (NN Solution))) (-RRB- -RRB-))) (, ,) (NP (NP (NNP D)) (PRN (-LRB- -LRB-) (NP (NNP Heterogeneous) (NNP Mixture)) (-RRB- -RRB-))))))) (. .)))
A substance that cannot be decomposed by any chemical reaction into simpler substances is called A(Element), B(Compounds), C(Homogeneous Mixture, or Solution), D(Heterogeneous Mixture).
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT a) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB be) (VP (VBN broken) (PRT (RP down)) (PP (TO to) (NP (JJ other) (NNS substances))) (PP (IN by) (NP (NP (NN chemical) (NNS reactions)) (NP (DT an) (NN element))))))))))) (. .)))