Soil pH is defined as the negative logarithm of the hydrogen ion concentration. The pH scale goes from 0 to 14 with pH 7 as the neutral point. As the amount of hydrogen ions in the soil increases the ...

When an acid is added to an alkali the pH of the acid increases towards 7 and the pH of the alkali decreases towards 7.

The pH scale shows how acidic a substance is. Learn what pH means and how it is measured in this KS3 chemistry guide from BBC Bitesize. Neutralisation reactions Acids and alkalis react together in ...

Bananas are alkaline, not acidic, which means they may neutralize stomach acid to help with heartburn. Learn about acidic ...

The pH scale is used to express the acidity or alkalinity of a solution by measuring the concentration of hydrogen ions in the solution. pH transmitters are part of a larger system which monitors and ...