pH scale


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pH scale

A 1 to 14 scale that measures alkalinity or acidity: pH7 is neutral, below 7 is acid and above 7 is alkaline.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pH scale - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per literpH scale - (from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic);
hydrogen ion concentration - the number of moles of hydrogen ions per cubic decimeter
acidity - pH values below 7
alkalinity - pH values above 7
neutrality - pH value of 7
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
References in periodicals archive ?
On the (0 to 14) pH scale, pure water is 7--that is, it's neither acidic nor alkaline.
The pH scale measures if a substance is acidic, basic (or alkaline) or neutral.
Today explains that it's highest on the pH scale, which is a good thing, as the lower the number, the more acidic the beverage.
In the measurement of pH value for both conventional and Nano fluids shows its acidic nature by its value in pH scale.
Also playing is the immense Dubrovnik, pH Scale, and Mac from House Culture.
The letters pH stand for power of hydrogen, so-called because the pH scale is logarithmic (in powers of 10) and measures the concentration of hydrogen ions in a water-based solution.
To avoid using such awkward and cumbersome numbers, the Danish biochemist Soren Sorensen devised the pH scale and introduced the pH definition.
Alkaline drinking water is slightly alkaline on the pH scale.
5 minutes period is allowed to warm up the pH meter, and its needle adjustment is verified at pH scale 7.
At some point on the pH scale, the shells of adult shellfish would be compromised, he said.