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barium
b a r i u m hex:#98;#97;#114;#105;#117;#109;
The Salt of the World?
- Barium - n. - One of the elements, belonging to the alkaline earth group; a metal having a silver-white color, and melting at a very high temperature. It is difficult to obtain the pure metal, from the facility with which it becomes oxidized in the air. Atomic weight, 137. Symbol, Ba. Its oxide called baryta.
- Heavy spar - - Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals.
- Isomorphism - n. - A similarity of crystalline form between substances of similar composition, as between the sulphates of barium (BaSO4) and strontium (SrSO4). It is sometimes extended to include similarity of form between substances of unlike composition, which is more properly called homoeomorphism.
- Per- - - Originally, denoting that the element to the name of which it is prefixed in the respective compounds exercised its highest valence; now, only that the element has a higher valence than in other similar compounds; thus, barium peroxide is the highest oxide of barium; while nitrogen and manganese peroxides, so-called, are not the highest oxides of those elements.
- Baryta - n. - An oxide of barium (or barytum); a heavy earth with a specific gravity above 4.
- Monoxide - n. - An oxide containing one atom of oxygen in each molecule; as, barium monoxide.
- Test - n. - A reaction employed to recognize or distinguish any particular substance or constituent of a compound, as the production of some characteristic precipitate; also, the reagent employed to produce such reaction; thus, the ordinary test for sulphuric acid is the production of a white insoluble precipitate of barium sulphate by means of some soluble barium salt.