( ( ( Charles ' ) Law ) ( ( states ( that ( ( at ( constant pressure ) ) ( , ( ( ( the volume ) ( of ( a gas ) ) ) ( ( ( increases or ) decreases ) ( by ( ( the ( same factor ) ) ( as ( its temperature ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Charles) (POS ')) (NN Law)) (VP (VBZ states) (SBAR (IN that) (S (PP (IN at) (NP (JJ constant) (NN pressure))) (, ,) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (DT a) (NN gas)))) (VP (VBZ increases) (CC or) (VBZ decreases) (PP (IN by) (NP (NP (DT the) (JJ same) (NN factor)) (PP (IN as) (NP (PRP$ its) (NN temperature))))))))) (. .)))
Charles' Law states that at constant pressure , the volume of a gas increases or decreases by the same factor as its temperature.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (NN temperature) (NNS increases)) (PP (CC but) (NP (NP (NN amount)) (PP (IN of) (NP (NP (NN gas)) (CC and) (NP (PRP$ its) (NN pressure))))))) (VP (VBP are) (ADJP (JJ constantvolume))))) (NP (NNS increases)) (VP (VBZ happens) (PP (TO to) (NP (NP (DT the) (NN volume)) (PP (IN of) (NP (DT the) (NN gas)))))) (. .)))