( Scientists ( ( use ( ( their knowledge ) ( of ( ( ( what ( ( the ( ( atoms and ) molecules ) ) ( look like ) ) ) and ) ( how ( they ( interact ( to ( determine ( ( the ( potential energy ) ) ( that ( can ( be ( stored ( in ( any ( particular ( chemical substance ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Scientists)) (VP (VBP use) (NP (NP (PRP$ their) (NN knowledge)) (PP (IN of) (SBAR (SBAR (WHNP (WP what)) (S (NP (DT the) (NNS atoms) (CC and) (NNS molecules)) (VP (VBP look) (PP (IN like))))) (CC and) (SBAR (WHADVP (WRB how)) (S (NP (PRP they)) (VP (VBP interact) (S (VP (TO to) (VP (VB determine) (NP (NP (DT the) (JJ potential) (NN energy)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB be) (VP (VBN stored) (PP (IN in) (NP (DT any) (JJ particular) (NN chemical) (NN substance))))))))))))))))))) (. .)))
Scientists use their knowledge of what the atoms and molecules look like and how they interact to determine the potential energy that can be stored in any particular chemical substance.
(ROOT (S (NP (NNP Energy)) (VP (VBZ is) (VP (VBN stored) (PP (IN in) (NP (NP (DT a) (JJ chemical) (NN substance)) (PP (IN between) (NP (NNS atoms))))))) (. .)))
Energy is stored in a chemical substance between atoms.