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Having to hydrogen atoms which can be replaced by positive or basic atoms or radicals to form salts; -- said of acids. See Dibasic.

Containing two atoms or equivalents of carbon in the molecule. [Obs. or R.]

A compound consisting of two atoms of chlorine with one or more atoms of another element; -- called also dichloride. Bichloride of mercury, mercuric chloride; -- sometimes called corrosive sublimate.

A compound of two atoms of hydrogen with some other substance. [Obs.]

is found in a native state, and as a constituent of some minerals. Specific gravity 9.8. Atomic weight 207.5. Symbol Bi.

A sulphide having two atoms of sulphur in the molecule; a disulphide, as in iron pyrites, FeS2; -- less frequently called bisulphuret.

Equivalent in combining or displacing power to two atoms of hydrogen; dyad.

A large voracious fish (Pomatomus saitatrix), of the family Carangidæ, valued as a food fish, and widely distributed on the American coast. On the New Jersey and Rhode Island coast it is called the horse mackerel, in Virginia saltwater tailor, or skipjack.

ies. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B.

One of the elements, related in its chemical qualities to chlorine and iodine. Atomic weight 79.8. Symbol Br. It is a deep reddish brown liquid of a very disagreeable odor, emitting a brownish vapor at the ordinary temperature. In combination it is found in minute quantities in sea water, and in many saline springs. It…

A compound radical, regarded as butane, less one atom of hydrogen.

occurring in some zinc ores. It is a white metal, both ductile and malleable. Symbol Cd. Atomic weight 111.8. It was discovered by Stromeyer in 1817, who named it from its association with zinc or zinc ore. Cadmium yellow, a compound of cadmium and sulphur, of an intense yellow color, used as a pigment.…

analysis, and is the most strongly basic and electro-positive substance known. Symbol Cs. Atomic weight 132.6.

color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight

luding the sugars, starches, and gums, which contain six (or some multiple of six) carbon atoms, united with a variable number of hydrogen and oxygen atoms, but with the two latter always in proportion as to form water; as dextrose, C6H12O6.

mentary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is combustible, and forms the base of lampblack and charcoal, and enters largely into mineral coals. In its pure crystallized state it constitutes the diamond, the hardest of known substances, occ…

d (Chem.), an acid H2CO3, not existing separately, which, combined with positive or basic atoms or radicals, forms carbonates. On common language the term is very generally applied to a compound of carbon and oxygen, CO2, more correctly called carbon dioxide. It is a colorless, heavy, irrespirable gas, extinguishing fl…

sed over the surface of gasoline. In the latter a fine spray of gasoline is drawn from an atomizing nozzle by a current of air induced by the suction of the engine piston, the supply of gasoline being regulated by a float which actuates a needle valve controlling the outlet of the feed pipe. Alcohol and other volatile…

e metallic element, occurring in the minerals cerite, allanite, monazite, etc. Symbol Ce. Atomic weight 141.5. It resembles iron in color and luster, but is soft, and both malleable and ductile. It tarnishes readily in the air.

The force exerted between the atoms of elementary substance whereby they unite to form chemical compounds; chemical attaction; affinity; -- sometimes used as a general expression for chemical activity or relationship.