+Ph is a scale used to specify the [Acidity](/wiki/acidity) or basicity of an aqueous solution. Ranging from 0 to 14, it indicates the concentration of [Hydrogen Ions](/wiki/hydrogen_ions); a Ph of 7 is neutral.
+## See also
+- [Chemistry](/wiki/chemistry)
+- [Acid](/wiki/acid)
+- [Base](/wiki/base)
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