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hydrogen peroxide

(Encyclopedia)hydrogen peroxide, chemical compound, H2O2, a colorless, syrupy liquid that is a strong oxidizing agent and, in water solution, a weak acid. It is miscible with cold water and is soluble in alcohol an...

inlaying

(Encyclopedia)inlaying, process of ornamenting a surface by setting into it material of different color or substance, usually in such a manner as to preserve a continuous plane. Inlay is employed in connection with...

Odessa, city, Ukraine

(Encyclopedia)Odessa , Rus. ədyĕˈsə [key], Ukr. Odesa, city (1989 pop. 1,115,000), capital of Odessa region, in Ukraine, a port on Odessa Bay of the Black Sea. The third largest Ukrainian city after Kiev and Kh...

Pawtucket

(Encyclopedia)Pawtucket pətəkˈət [key], city (1990 pop. 72,644), Providence co., NE R.I., on the Blackstone River at Pawtucket Falls; settled 1671, inc. 1885 after the eastern section (which was part of Massach...

pound

(Encyclopedia)pound, abbr. lb, unit of either mass or force in the customary system of English units of measurement. Two different pounds of mass are defined, one in the avoirdupois system of units and one in the T...

allotropy

(Encyclopedia)allotropy əlŏˈtrəpē [key] [Gr.,=other form]. A chemical element is said to exhibit allotropy when it occurs in two or more forms in the same physical state; the forms are called allotropes. Allot...

Cremona

(Encyclopedia)Cremona krĭmōˈnə, Ital. krāmôˈnä [key], city, capital of Cremona prov., Lomba...

Hall effect

(Encyclopedia)Hall effect, experiment that shows the sign of the charge carriers in a conductor. In 1879 E. H. Hall discovered that when he placed a metal strip carrying a current in a magnetic field, a voltage dif...

Mayotte

(Encyclopedia)Mayotte mīŏtˈ [key], island (2015 est. pop. 240,000), 144 sq mi (374 sq km), French departmental collectivity, Indian Ocean, in the Comoro chain. Mamoudzou is the capital and largest city. The land...

acetylene

(Encyclopedia)acetylene ĕthˈīn [key], HC≡CH, a colorless gas. It melts at −80.8℃ and boils at −84.0℃. Offensive odors often noted in commercial acetylene are due to impurities. Acetylene forms explosiv...