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alkyl group

(Encyclopedia)alkyl group ălˈkĭl [key], in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl group is derived from t...

Tung Ch'i-ch'ang

(Encyclopedia)Tung Ch'i-ch'ang do͞ong chē-chäng [key], 1555–1636, leading painter, calligrapher, connoisseur, and critic of the Ming dynasty. A high official in various public offices, was also regarded as the...

isomer

(Encyclopedia)isomer īˈsəmər [key], in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the molecule). Isomerism is the occurrence of ...

Ch'ien-lung

(Encyclopedia)Ch'ien-lung chyĕnˈ-lo͞ongˈ [key], 1711–99, reign title of the fourth emperor (1735–96) of the Ch'ing dynasty, whose given name was Hung-li. Under his vigorous military policy, China attained i...

Chinese art

(Encyclopedia)Chinese art, works of art produced in the vast geographical region of China. It the oldest art in the world and has its origins in remote antiquity. (For the history of Chinese civilization, see China...

propane

(Encyclopedia)propane, CH3CH2CH3, colorless, gaseous alkane. It is readily liquefied by compression and cooling. It melts at −189.9℃ and boils at −42.2℃. Propane occurs in nature in natural gas and (in diss...

ether, in chemistry

(Encyclopedia)CE5 Ethers ether, any of a number of organic compounds whose molecules contain two hydrocarbon groups joined by single bonds to an oxygen atom. The most common of these compounds is ethyl ether, C...

Lao She

(Encyclopedia)Lao She chĭng-cho͝on [key], 1899–1966, Chinese writer. He wrote his first novels while teaching Chinese at the Univ. of London's School of Oriental Studies (1924–30). He continued to teach and w...

Tuan Ch'i-jui

(Encyclopedia)Tuan Ch'i-jui dwänˈchē-jo͞oē [key], 1865–1936, Chinese general and political leader. He studied military science in Germany and held high positions in the army under the Ch'ing dynasty. After t...

Wang Ch'ung-hui

(Encyclopedia)Wang Ch'ung-hui wäng cho͞ong-hwē [key], 1881–1958, Chinese jurist. He was educated in China, Japan, Europe, and the United States. He was greatly influenced by Sun Yat-sen. Wang became (1912) the...