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covalent bond

(Encyclopedia)covalent bond kōˌvāˈlənt [key]: see chemical bond. ...

Itabuna

(Encyclopedia)Itabuna ētəbo͞oˈnə [key], city, Bahia state, E Brazil, on the Itabuna River. A cacao-pro...

Izumiotsu

(Encyclopedia)Izumiotsu ēzo͞omēˈōtso͞o [key], city, Osaka prefecture, S Honshu, Japan, on Osaka Bay. It is a ...

Badalona

(Encyclopedia)Badalona bäˌᵺəlōˈnə [key], city, Barcelona prov., NE Spain, in Catalonia. It is a Med...

Wellingborough

(Encyclopedia)Wellingborough, town (1991 pop. 38,598) and district, Northamptonshire, central England. It is an extremely old market town. Formerly known for its chalybeate spring, Wellingborough is a rail center w...

bohemium

(Encyclopedia)bohemium bōhēˈmēəm [key], former name of the chemical element rhenium. ...

oxygen

(Encyclopedia)oxygen, gaseous chemical element; symbol O; at. no. 8; interval in which at. wt. ranges 15.99903–15.99977; m.p. −218.4℃; b.p. −182.962℃; density 1.429 grams per liter at STP; valence −2. T...

Marsh, James

(Encyclopedia)Marsh, James, 1789–1846, English chemist. He is known for his chemical test for arsenic and antimony, called the Marsh test. Using it, very small quantities of arsenic can be detected. ...

Shibata

(Encyclopedia)Shibata shĭbäˈtä [key], city (1990 pop. 78,170), Niigata prefecture, W central Honshu, Japan, on the Kaji River. It is a distribution point for rice and a center for iron, steel, and chemical indu...

columbium

(Encyclopedia)columbium kəlŭmˈbēəm [key], symbol Cb, former name of the chemical element niobium. ...