( ( Acid-base indicators ) ( exhibits ( ( different colors ) ( due ( to ( ( a substance ) ( that ( is ( sensitive ( to ( ( a change ) ( in pH. ) ) ) ) ) ) ) ) ) ) ) )
(ROOT (S (NP (JJ Acid-base) (NNS indicators)) (VP (VBZ exhibits) (S (NP (JJ different) (NNS colors)) (ADJP (JJ due) (PP (TO to) (NP (NP (DT a) (NN substance)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (ADJP (JJ sensitive) (PP (TO to) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NN pH.))))))))))))))))
Acid-base indicators exhibits different colors due to a substance that is sensitive to a change in pH.
(ROOT (S (SBAR (IN If) (S (NP (DT a) (NN substance)) (VP (VBZ has) (NP (DT a) (NN ph) (NN value)) (NP (QP (JJR greater) (IN than) (CD 7)))))) (, ,) (NP (DT that)) (VP (VBZ indicates) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ is) (NP (NN base)))))) (. .)))
If a substance has a ph value greater than 7,that indicates that it is base.