Webnoun al· ka· li ˈal-kə-ˌlī plural alkalies or alkalis 1 : a soluble salt obtained from the ashes of plants and consisting largely of potassium or sodium carbonate broadly : a substance (such as a hydroxide or carbonate of an alkali metal) having marked basic properties compare base sense 6a 2 : alkali metal 3 WebJan 25, 2024 · alkaline: : of, relating to, containing, or having the properties of an alkali or alkali metal : basic; especially, of a solution : having a pH of more than 7 The almighty Wikipedia, fairly representative of a half-dozen other online definitions:

5.3: pH - Biology LibreTexts

WebAny substance that has a pH higher than 7 is an alkali (or alkaline) substance, which is also called basic. Any substance that has a pH lower than 7 is an acid. Lesson Quiz Course … WebDefinition of pH: pH is defined as the negative of logarithm (base 10) of the hydrogen ion concentration. It is defined as the logarithm of the reciprocal of the hydrogen ion concentration. All vital activities are affected by H + concentration. Hydrogen ion concentration must be ascertained before the pH is calculated. logic flaw

pH: Definition and Determination Biophysics

WebJul 8, 2024 · Enzymes help with the chemical reactions that keep a person alive and well. For example, they perform a necessary function for metabolism, the process of breaking down food and drink into energy ... WebThe number of hydrogen ions is a direct measure of how acidic or how basic a solution is. The pH scale is logarithmic and ranges from 0 to 14 ( Figure 2 ). We define pH=7.0 as neutral. Anything with a pH below 7.0 is termed acidic and any reported pH above 7.0 is termed alkaline or basic. Webnoun. (ˈ)pē-ˈāch. : a number used in expressing acidity or alkalinity on a scale whose values run from 0 to 14 with 7 representing neutrality, numbers less than 7 … industrial sewing machine reviews