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sonata
(Encyclopedia) sonatasonatasənäˈtə [key], in music, type of instrumental composition that arose in Italy in the 17th cent. At first the term merely distinguished an instrumental piece from a piece…ethanol
(Encyclopedia) ethanolethanolĕthˈənōlˌ [key] or ethyl alcohol, CH3CH2OH, a colorless liquid with characteristic odor and taste; commonly called grain alcohol or simply alcohol. Ethanol is used…colloid
(Encyclopedia) colloidcolloidkŏlˈoid [key] [Gr.,=gluelike], a mixture in which one substance is divided into minute particles (called colloidal particles) and dispersed throughout a second substance…olivine
(Encyclopedia) olivineolivineŏlĭvˈēn [key], an iron-magnesium silicate mineral, (Mg,Fe)2SiO4, crystallizing in the orthorhombic system. It is a common constituent of magnesium-rich, silica-poor…mercuric chloride
(Encyclopedia) mercuric chloride or mercury (II) chloride, chemical compound, HgCl2, a white powder of colorless rhombohedral crystals, somewhat soluble in water. It is also called bichloride of…Alder, Kurt
(Encyclopedia) Alder, KurtAlder, Kurtälˈdər [key], 1902–58, German chemist, educated at Berlin and at Kiel. He was on the research staff of the Bayer Dye Works (1936–40) before becoming (1940)…amphibole
(Encyclopedia) amphiboleamphiboleămˈfəbōlˌ [key], any of a group of widely distributed rock-forming minerals, magnesium-iron silicates, often with traces of calcium, aluminum, sodium, titanium, and…ode
(Encyclopedia) ode, elaborate and stately lyric poem of some length. The ode dates back to the Greek choral songs that were sung and danced at public events and celebrations. The Greek odes of Pindar…chemical reaction
(Encyclopedia) chemical reaction, process by which one or more substances may be transformed into one or more new substances. Energy is released or is absorbed, but no loss in total molecular weight…dune
(Encyclopedia) dune, mound or ridge of wind-blown sand formed in arid regions and along coasts. Dunes are common in most of the great deserts of the world. Often a dune begins to form because…Trending
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