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sulfide

(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.,…

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…

ammonia

(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…

xylene

(Encyclopedia) xylenexylenezīˈlēn [key] or dimethylbenzenexylenedīˌmĕthəlbĕnˈzēn [key], C6H4(CH3)2, colorless, oily, liquid aromatic hydrocarbon, used extensively as a solvent, obtained from coal tar…

DK Science: Mixtures

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…

glycerol

(Encyclopedia) glycerol,&sp;glycerin,&sp;glycerine, or 1,2,3-propanetriolglycerol,prōˈpāntrīˌŏl [key], CH2OHCHOHCH2OH, colorless, odorless, sweet-tasting, syrupy liquid. Glycerol is a…

adsorption

(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…

Anatomy and
Physiology: Reabsorption

ReabsorptionAnatomy and PhysiologyThe Excretory SystemWaterworksWhere It All HappensReabsorptionWhen You Gotta Go … It's a bit ironic that once the material has been filtered out, so much of it…

salt, chemical compound

(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…

DK Science & Technology: Chemical Industry

WHAT DOES A CHEMICAL PLANT DO? HOW ARE ACIDS AND ALKALIS USED? DRILLING FOR OIL OIL REFINERYAGROCHEMICALSPHARMACEUTICALSFIND OUT MOREPlastics, AGROCHEMICALS, PHARMACEUTICALS, paints, and detergents…