sentence2_structure: The ph scale measures acids<>and<>bases$$$The ph scale measures acids<>and bases and has<>7$$$The ph scale measures acids<>and bases and has 7 as<>a neutral value$$$bases<>and has<>7$$$bases<>and has 7 as<>a neutral value$$$7<>as<>a neutral value
sentence1: On the pH scale, which varies from 0-14, a very acidic solution has a low pH value, a very basic solution has a high pH value, and a neutral solution has a pH of approximately 7.
sentence2: The ph scale measures acids and bases and has 7 as a neutral value.
question: Which scale measures acids and bases and has 7 as a neutral value?