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amphoterism

(Encyclopedia)amphoterism ămˌfətĕrˈĭzm [key], in chemistry, the property of certain substances of acting either as acids or as bases depending on the reaction in which they are involved. Many hydroxide compou...

turquoise

(Encyclopedia)turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has a waxy luster; ...

Al

(Encyclopedia)Al, symbol for the element aluminum. ...

Benton

(Encyclopedia)Benton, city (2020 pop. 37,604), seat of Saline co., central Ark.; founded 1836. Once a significant aluminum producer, the city manufactures fabricated-...

Dolton

(Encyclopedia)Dolton, village (2020 pop. 22,006), Cook co., NE Ill., on the Little Calumet River, S of Chicago; settled 1832, inc. 1892. Steel, aluminum products, gla...

beryllium

(Encyclopedia)beryllium bərĭlˈēəm [key] [from beryl ], metallic chemical element; symbol Be; at. no. 4; at. wt. 9.01218; m.p. about 1,278℃; b.p. 2,970℃ (estimated); sp. gr. 1.85 at 20℃; valence +2. Ber...

Pavlodar

(Encyclopedia)Pavlodar, city (1989 pop. 330,748), N Kazakhstan, on the Irtysh River. It is an oil-refining center, and manufactures include heavy machinery, aluminum, and chemicals. It was founded as a fortress in ...

Montville

(Encyclopedia)Montville, town (1990 pop. 16,673), New London co., SE Conn.; founded 1670, inc. 1786. Paper products, sheet metal, computer circuit boards, tachometers, aluminum doors and windows, and boxes are made...

quasicrystal

(Encyclopedia)quasicrystal kwāˈzīkrĭsˌtəl, kwäzˈē– [key] or quasiperiodic solid, solid body that exhibits such crystalline features as symmetry and repeating patterns of unit cells (regular arrangements ...

Takaoka

(Encyclopedia)Takaoka täkäˈôkä [key], city (1990 pop. 175,466), Toyama prefecture, W central Honshu, Japan, on the Sho River. A center for the Japanese aluminum industry, Takaoka also produces paper, copper, a...