alkaline earth


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alkaline earth

n
1. (Elements & Compounds) Also called: alkaline earth metal or alkaline earth element any of the divalent electropositive metals beryllium, magnesium, calcium, strontium, barium, and radium, belonging to group 2A of the periodic table
2. (Elements & Compounds) an oxide of one of the alkaline earth metals

al′kaline earth′


n.
any of the oxides of barium, radium, strontium, calcium, and, sometimes, magnesium.
[1810–20]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.alkaline earth - any of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium)alkaline earth - any of the bivalent metals of group II of the periodic table (calcium or strontium or barium or magnesium or beryllium)
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
References in periodicals archive ?
The commonly used catalysts in the pyrolysis of oil shale mainly include alkali, alkaline earth metals and transition metal species as well as their compounds [14].
There was an increment of the cell parameters with ionic radii of alkaline earth element as expected whereas the change of the a/c ratio can show that there was also redistribution of ions on the sites A1 and A2 depending on the kind of the alkaline earth element.
The main advantage of demineralization for treating water in the heating circuit is that it removes not only the hardening alkaline earth cations but also their counterions, thereby producing salt-free water with a very low residual conductivity.
And after systematically going through the periodic table, they were left with alkali and alkaline Earth metals, including sodium and calcium carbonate.
When Smartex which was launched at Wetex 15 in Dubai, is able to smartly extract families of ions in line with Mendeleev classification columns, such as Alkali metals (cations+) or Alkaline earth metals (cations++), Selectex takes the technology one step further, said the company in a statement.
Key statement: A method containing a step of reacting a conjugated diene polymer having an alkali metal or alkaline earth metal active end with a hydrocarbyloxysilane compound having one or more of each of the following functional groups I and II in its molecule to obtain a modified conjugated diene polymer containing a functional group II, and a step of mixing the modified conjugated diene polymer and a compound such as organic acid.
The changes in elemental concentrations that occur during the incubation process can be associated with the request of the growing embryo for certain elements and the solubilities of alkaline earth carbonates.
The firing temperature for vitrified wheel preparation can be minimized by selecting appropriate contents of boron oxide, alkali oxides and alkaline earth oxides, and by maintaining the correct ratios of boron oxide to alkali oxides, sodium oxide to lithium oxide, and silicon oxide to the combination of alkali oxides and alkaline earth oxides in these bonds [8].
Alkali and alkaline earth chromate by time of flight laser microprobe mass spectrometry and fourier transform ion cyclotron resonance mass spectrometry were studied by Frederic A.
The authors have organized the main body of their text in eight chapters devoted to a collection of basic concepts in inorganic chemistry, alkali and alkaline earth metals, group thirteen elements, group fourteen elements, nitrogen, the heavier pnictogens, and a wide variety of other related subjects.
It is comprised of perfume; at least one nonionic surfactant; at least one alkyl benzene sulfonate; at least one olefin sulfonate; and at least one inorganic alkali metal salt or alkaline earth metal salt.
These complex oxides of alkaline earth metal elements and titanium, zirconium, or niobium and have high infrared reflectivity after firing.