| pH is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. The pH value is a number without units, usually between 0 and 14, that indicates whether a solution is acidic (pH 7). |
| owl:ObjectProperty |
ObjectProperty(oilspills:oilHasPH annotation(rdfs:comment "pH is a measure of the activity of hydrogen ions (H+) in a solution and, therefore, its acidity or alkalinity. The pH value is a number without units, usually between 0 and 14, that indicates whether a solution is acidic (pH 7)."^^<http://www.w3.org/2001/XMLSchema#string>)
super(oilspills:oilHasChemicalProperty)
range(oilspills:PH))