( ( express ( rates ( of ( ( chemical reactions ) ( in ( terms ( of ( changes ( in ( concentrations ( of ( ( reactants and ) products ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB express) (NP (NP (NNS rates)) (PP (IN of) (NP (NP (NN chemical) (NNS reactions)) (PP (IN in) (NP (NP (NNS terms)) (PP (IN of) (NP (NP (NNS changes)) (PP (IN in) (NP (NP (NNS concentrations)) (PP (IN of) (NP (NNS reactants) (CC and) (NNS products))))))))))))) (. .)))
express rates of chemical reactions in terms of changes in concentrations of reactants and products.
(ROOT (S (NP (PRP You)) (VP (VBP see) (NP (DT a) (JJR faster) (NN reaction) (NN rate)) (SBAR (WHADVP (WRB when)) (S (NP (NP (DT the) (NN concentration)) (PP (IN of) (NP (NNS reactants)))) (VP (VBZ is) (ADJP (JJR higher)))))) (. .)))