Alkaline earth

These include beryllia, magnesia, calcia, strontia and baria. Alkaline earths are essential materials used in glassmaking, with calcia and magnesia being particularly important in ...

alkaline earths

Arts & crafts; Ceramics

A category of high-fire fluxes which includes calcium, magnesium, barium, and strontium. Encourage hard, durable, but often matt glaze surfaces.

alkaline earth

Chemistry; General chemistry

An oxide of an alkaline earth metal , which produces an alkaline solution in reaction with water.

Alkaline earths

Language; Encyclopedias

Earths not soluble in water, viz., lime, magnesia, strontia, and baryta.

yttrium oxide

Chemistry; Inorganic chemistry

Y 2 O 3 A yellowish powder, insoluble in water, soluble in dilute acids; used as television tube phosphor and microwave filters. Also known as yttria.

calcium sulfate

Chemistry; Inorganic chemistry

1. CaSO 4 A white crystalline salt, insoluble in water; used in Keene’s cement, in pigments, as a paper filler, and as a drying agent. 2. Either of two hydrated forms of the ...

magnesium bromide

Chemistry; Inorganic chemistry

MgBr 2 _6H 2 O Deliquescent, colorless, bitter-tasting crystals, melting at 172_C; soluble in water, slightly soluble in alcohol; used in medicine and in the synthesis of organic ...

silicon halide

Chemistry; Inorganic chemistry

A compound of silicon and a halogen; for example, SiBr 4 , Si 2 Br 6 , SiCl 4 , Si 2 Cl 6 , Si 3 Cl 8 , SiF 4 , Si 2 F 6 , SiI 4 , and Si 2 F 6 .

yttrium sulfate

Chemistry; Inorganic chemistry

Y 2 (SO 4 ) 3 _8H 2 O Reddish crystals that are soluble in concentrated sulfuric acid, slightly soluble in water; decomposes at 700_C; used as an analytical reagent.

calcium sulfide

Chemistry; Inorganic chemistry

CaS In pure form, white cubic crystals, slightly soluble in water; used as a base for luminescent materials. Also known as hepar calcies; sulfurated lime.