Step-by-step explanation:
A pH scale is a scale which helps in identifying whether a given substance is basic, acidic or neutral in nature.
So, when a substance has pH value less then 7 then it means the substance is acidic in nature. Whereas when a substance has pH value more then 7 then it means the substance is basic in nature.
On the other hand, if pH value of a substance is equal to 7 then it means the substance is neutral in nature.
Hence, we can conclude that the pH scale runs from 0 to 14, and is an indication of how acidic or basic a solution is. A pH close to zero indicates an acidic solution, and a pH near 14 indicates a basic solution.