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TeachMeFinance.com - explain pH pH The term 'pH' as it applies to the area of reclamation can be defined as ' The symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter. A measurement of soil acidity. A relative scale, from 0 to 14, of how acidic or basic (alkaline) a material is, where a pH of 7 is neutral, smaller readings increasingly acid. Indicator of acidity. An expression of the intensity of the basic or acid condition of a liquid. Natural waters usually have a pH between 6.5 and 8.5'. The term 'pH' as it applies to the area of water can be defined as 'a measure of the relative acidity or alkalinity of water. Water with a pH of 7 is neutral; lower pH levels indicate increasing acidity, while pH levels higher than 7 indicate increasingly basic solutions'. The term 'pH' as it applies to the area of energy can be defined as ' A measure of acidity or alkalinity. A pH of 7 represents neutrality. Acid substances have lower pH. Basic substances have higher pH'. Previous 5 Terms: petrology PFC PFD Pfiesteria piscicida PGA Next 5 Terms: pH pH phacochoerine phacoid phacolith About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.