Final answer:
The pH scale is logarithmic and measures the acidity or alkalinity of a solution.
Step-by-step explanation:
The pH scale is logarithmic. It measures the acidity or alkalinity of a solution, with values ranging from 0 to 14. A solution with a pH of 7 is considered neutral, below 7 is acidic, and above 7 is alkaline (or basic). Each unit on the pH scale represents a tenfold difference in acidity or alkalinity. For example, a solution with a pH of 3 is ten times more acidic than a solution with a pH of 4.
Learn more about pH scale