What is a base in Chemistry? Acids and Bases
Learn the difference between an acid and a base.The acidity of a solution is measured by its number of hydrogen ions. You can look up this measure on a ph scale. The abbreviation pH stands for potential hydrogen, and it is a measure how much hydrogen is in the solution and how active the hydrogen ion is. Hydrogen ions determine whether a solution is an acid or a base
A base that is water-soluble is called an alkali.
Acids are hydrogen ion donors and alkalis are hydrogen receptors.