( ( ( Chemical ( Reactions Transformation ) ) ( of ( ( a substance ) ( into ( ( ( a ( new substance ) ) or ) substances ) ) ) ) ) ( ( is ( called ( a ( chemical reaction ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Chemical) (NNPS Reactions) (NNP Transformation)) (PP (IN of) (NP (NP (DT a) (NN substance)) (PP (IN into) (NP (NP (DT a) (JJ new) (NN substance)) (CC or) (NP (NNS substances))))))) (VP (VBZ is) (VP (VBN called) (NP (DT a) (JJ chemical) (NN reaction)))) (. .)))
Chemical Reactions Transformation of a substance into a new substance or substances is called a chemical reaction .
(ROOT (S (NP (DT A) (NN combination) (NN reaction)) (VP (VBZ is) (NP (NP (DT a) (NN reaction)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (CD two) (CC or) (JJR more) (NNS substances)) (VP (VBP combine) (S (VP (TO to) (VP (VB form) (NP (DT a) (JJ single) (JJ new) (NN substance)))))))))) (. .)))