( They ( ( have ( ( ( interwoven ( principles ( of ( ( ( ( ( ( quantum theory ) , ) ( statistical mechanics ) ) , ) and ) ( reagent chemistry ) ) ) ) ) ( into ( ( stepwise syntheses ) ( from ( subatomic particles ) ) ) ) ) ( to ( atoms ( to ( chemical compounds ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP have) (VP (VBN interwoven) (NP (NP (NNS principles)) (PP (IN of) (NP (NP (NN quantum) (NN theory)) (, ,) (NP (JJ statistical) (NNS mechanics)) (, ,) (CC and) (NP (JJ reagent) (NN chemistry))))) (PP (IN into) (NP (NP (JJ stepwise) (NNS syntheses)) (PP (IN from) (NP (JJ subatomic) (NNS particles))))) (PP (TO to) (NP (NP (NNS atoms)) (PP (TO to) (NP (NN chemical) (NNS compounds))))))) (. .)))
They have interwoven principles of quantum theory, statistical mechanics, and reagent chemistry into stepwise syntheses from subatomic particles to atoms to chemical compounds.
(ROOT (S (NP (NP (DT The) (JJ specialized) (NN study)) (PP (IN of) (NP (NP (DT the) (NN motion)) (PP (IN of) (NP (NP (NNS objects)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (JJ atomic/subatomic) (PP (IN in) (NP (NN size)))))))))))) (VP (VBZ is) (VP (VBN called) (NP (NN quantum) (NNS mechanics)))) (. .)))
The specialized study of the motion of objects that are atomic/subatomic in size is called quantum mechanics.