What does pH mean in text?

pH is a measure of the acidity or alkalinity of a solution, expressed on a scale from 0 to 14. A pH of 7 is considered neutral, values below 7 indicate acidity, and values above 7 indicate alkalinity. It is a logarithmic scale, meaning each whole number change represents a tenfold change in acidity or alkalinity. pH is crucial in various fields, including chemistry, Biology, and environmental science, as it affects chemical reactions, biological processes, and ecosystem health.