( Chemistry ( ( is ( ( the science ) ( that ( seeks ( to ( ( understand ( ( the behavior ) ( of matter ) ) ) ( by ( studying ( ( the behavior ) ( of ( ( atoms & ) molecules ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Chemistry)) (VP (VBZ is) (NP (NP (DT the) (NN science)) (SBAR (WHNP (WDT that)) (S (VP (VBZ seeks) (S (VP (TO to) (VP (VB understand) (NP (NP (DT the) (NN behavior)) (PP (IN of) (NP (NN matter)))) (PP (IN by) (S (VP (VBG studying) (NP (NP (DT the) (NN behavior)) (PP (IN of) (NP (NNS atoms) (CC &) (NNS molecules))))))))))))))) (. .)))
Chemistry is the science that seeks to understand the behavior of matter by studying the behavior of atoms & molecules.
(ROOT (S (NP (NNP Chemistry)) (VP (VBZ is) (VP (VBN defined) (PP (IN as) (NP (NP (DT the) (NN study)) (PP (IN of) (NP (NN matter))))))) (. .)))