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ph 音标拼音: [p'i'etʃ]

n. ph值

ph值

WordNet (r) 3.0 (2006) (WordNet)

pH
n 1: (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); [synonym: {pH}, {pH scale}]

The Free On-line Dictionary of Computing (foldoc)

The {country code} for the Philippines.

(1999-01-27)

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英文字典中文字典相关资料:

pH - Wikipedia
In chemistry, pH ( piːˈheɪtʃ or piːˈeɪtʃ ; pee-AYCH) is a logarithmic scale used to specify the acidity or basicity of aqueous solutions Acidic solutions (solutions with higher concentrations of hydrogen (H+) cations) are measured to have lower pH values than basic or alkaline solutions
PH | Definition, Scale, Uses, Examples, Facts | Britannica
A pH value is the quantitative measure of the acidity or basicity of aqueous or other liquid solutions The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion into numbers between 0 and 14
What is pH? - US EPA
What is pH? Acidic and alkaine (or "basic") are two extremes that describe substances, usually liquids or chemicals, just like hot and cold are two extremes that describe temperature A substance that is neither acidic nor alkaline is neutral The pH scale measures how acidic or alkaline a substance is The scale ranges from 0 to 14
pH Scale: Definition, Chart, Values, Range - Chemistry Learner
pH is a scale used to measure the acidity or basicity of a solution It ranges from 0 to 14 and reflects the relative concentration of hydrogen ions (H⁺) and hydroxide ions (OH⁻) in aqueous solutions
The pH Scale of Common Chemicals - Science Notes and Projects
The pH scale shows how acidic or alkaline (basic) a chemical is in water See a chart of the pH of common chemicals and learn what pH means
PH Scale: Acids, Bases, and Common Materials
The pH scale measures how acidic or basic (alkaline) a substance is It ranges from 0 to 14 A pH of 7 is neutral Values below 7 are acidic, and values above 7 are basic Pure water has a neutral pH of 7 When substances dissolve in water, they can shift the pH
Public Health Homepage
Devin Stokes is a recent BYU Public Health graduate who sat down to talk about the moments that mattered most to her as a public health student and how she was able to attend John Hopkins university Sydney Clark talks about her time being in the Public Health program and her time navigating and thriving in the health promotion emphasis
pH and Water | U. S. Geological Survey - USGS. gov
pH is a measure of how acidic basic water is The range goes from 0 to 14, with 7 being neutral pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base
What is pH? The pH Formula Equation - ChemTalk
This article explains the concept of pH, how to find and calculate the pH, and how the pH formula and pH equation are used in chemistry!
pH and pOH: Crash Course Chemistry #30 - YouTube
In this episode, Hank goes over Reversible Reactions, the water dissociation constant, what pH and pOH actually mean, Acids, Bases, and Neutral Substances as well as the not-so-terrifying

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