( ( ( example : ) ( wood ( reacts w ) ) ) ( / ( ( ( ( oxygen ( to ( burn iron ) ) ) reacts ) ( ( w ( / ( ( oxygen ( to ( rust ( HCl ( reacts w ) ) ) ) ) / ) ) ) ( ( ( ( ( shells , ) ( baking soda ) ) , ) and ) ( chalk ( to ( form ( ( CO2 ( B. ( Chemical changes ) ) ) ( ( -LRB- ( reactions -RRB- ) ) ( ( form ( new substances ) ) ( with ( new properties ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (FRAG (NP (NP (NN example)) (: :) (NP (NN wood) (NN reacts) (NN w))) (: /) (SINV (VP (VBG oxygen) (S (VP (TO to) (VP (VB burn) (NP (NN iron)))))) (VP (VBZ reacts)) (NP (NP (NN w)) (PRN (: /) (NP (NP (NN oxygen)) (PP (TO to) (NP (NN rust) (NNP HCl) (JJ reacts) (NN w)))) (: /)) (NP (NP (NNS shells)) (, ,) (NP (VBG baking) (NN soda)) (, ,) (CC and) (NP (NN chalk) (S (VP (TO to) (VP (VB form) (S (NP (NNP CO2) (NNP B.) (NNP Chemical) (NNS changes)) (PRN (-LRB- -LRB-) (NP (NNS reactions)) (-RRB- -RRB-)) (VP (VB form) (NP (JJ new) (NNS substances)) (PP (IN with) (NP (JJ new) (NNS properties)))))))))))) (. .)))
example: wood reacts w/ oxygen to burn iron reacts w/ oxygen to rust HCl reacts w/ shells, baking soda, and chalk to form CO2 B. Chemical changes (reactions) form new substances with new properties.
(ROOT (S (NP (NNP Wood) (NNP burning)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (NP (DT a) (JJ different) (NN substance)) (VP (VBG being) (VP (VBN formed))))))) (. .)))