(Encyclopedia) sulfide, chemical compound containing sulfur and one other element or sulfur and a radical. Sulfides may be salts or esters of hydrogen sulfide, H2S, or may be formed directly, e.g.,…
(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…
(Encyclopedia) ammonia, chemical compound, NH3, colorless gas that is about one half as dense as air at ordinary temperatures and pressures. It has a characteristic pungent, penetrating odor. Ammonia…
(Encyclopedia) xylenexylenezīˈlēn [key] or dimethylbenzenexylenedīˌmĕthəlbĕnˈzēn [key], C6H4(CH3)2, colorless, oily, liquid aromatic hydrocarbon, used extensively as a solvent, obtained from coal tar…
(Encyclopedia) adsorption, adhesion of the molecules of liquids, gases, and dissolved substances to the surfaces of solids, as opposed to absorption, in which the molecules actually enter the…
COMMON PARTICLESMINERAL MIXTURESPARTICLE SIZESOLUTIONSFIND OUT MOREAlmost everything is made of different substances mixed together. Things are only easy to recognize as mixtures if the PARTICLE…
(Encyclopedia) salt, chemical compound (other than water) formed by a chemical reaction between an acid and a base (see acids and bases).
Salts are also prepared by methods other than…
(Encyclopedia)
CE5
Esters
ester, any one of a group of organic compounds with general formula RCO2R′ (where R and R′ are alkyl groups or aryl groups) that are formed by the reaction between an…
(Encyclopedia) glycolglycolglīˈkōl [key], dihydric alcohol in which the two hydroxyl groups are bonded to different carbon atoms; the general formula for a glycol is (CH2)n(OH)2. The most important…
