( ( The scale ) ( ( ( goes ( from ( 1 ( -LRB- ( ( very acid ) -RRB- ) ) ) ) ) ( to ( ( ( 14 ( -LRB- ( ( very alkaline ) -RRB- ) ) ) ( with ( ( the ( neutral pH ) ) ( of 7 ) ) ) ) ( in ( ( the middle ) ( of ( the scale ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN scale)) (VP (VBZ goes) (PP (IN from) (NP (NP (CD 1)) (PRN (-LRB- -LRB-) (NP (RB very) (NN acid)) (-RRB- -RRB-)))) (PP (TO to) (NP (NP (NP (CD 14)) (PRN (-LRB- -LRB-) (ADJP (RB very) (JJ alkaline)) (-RRB- -RRB-))) (PP (IN with) (NP (NP (DT the) (JJ neutral) (NN pH)) (PP (IN of) (NP (CD 7))))) (PP (IN in) (NP (NP (DT the) (NN middle)) (PP (IN of) (NP (DT the) (NN scale)))))))) (. .)))
The scale goes from 1 (very acid) to 14 (very alkaline) with the neutral pH of 7 in the middle of the scale.
(ROOT (S (NP (DT The) (NN ph) (NN scale)) (VP (VP (VBZ measures) (NP (NNS acids) (CC and) (NNS bases))) (CC and) (VP (VBZ has) (NP (NP (CD 7)) (PP (IN as) (NP (DT a) (JJ neutral) (NN value)))))) (. .)))
The ph scale measures acids and bases and has 7 as a neutral value.