Final answer:
On the pH scale, a value of 7 is considered neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic or alkaline.
Step-by-step explanation:
On the pH scale, a value of 7 is considered neutral. The pH scale ranges from 0 to 14, which measures the acidity or alkalinity of a solution. If the pH value is less than 7, the solution is acidic; if the pH value is exactly 7, it is neutral, and if the pH value is greater than 7, the solution is considered basic or alkaline. For instance, water is neutral with a pH of 7.0, indicating it is neither acidic nor basic. In contrast, substances like household ammonia with a pH of 11.0 are basic, and cherries with a pH of 3.6 are acidic.