silica pigment
51Purple-K — is a dry chemical fire suppression agent used in some dry powder fire extinguishers. It is the most effective dry chemical in fighting class B (flammable liquid) fires, and can be used against some energized electrical equipment fires (USA class… …
52W. R. Grace and Company — Infobox Company company name = W. R. Grace and Company company company type = Public (NYSE|GRA) slogan = foundation = 1854 location = Columbia, Maryland key people = Alfred Festa, CEO Pres num employees = 6,500 industry = Basic Materials products …
53Ceramic glaze — Composite body, painted, and glazed bottle. Dated 16th century. From Iran. New York Metropolitan Museum of Art. Glaze is a layer or coating of a vitreous substance which has been fired to fuse to a ceramic object to color, decorate, strengthen or …
54Pinnularia — is a fresh water alga and a type of Bacilliophyta (diatoms).HabitatPinnularia is a fresh Water alga, usually found in ponds and moist soil.They can also be found in springs, estuaries, sediments and in the ocean.General StructureCell Wall and… …
55crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …
56Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …
57sponge — spongeless, adj. spongelike, adj. spongingly, adv. /spunj/, n., v., sponged, sponging. n. 1. any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, siliceous or calcareous internal skeleton or… …
58wine — wineless, adj. winish, adj. /wuyn/, n., adj., v., wined, wining. n. 1. the fermented juice of grapes, made in many varieties, such as red, white, sweet, dry, still, and sparkling, for use as a beverage, in cooking, in religious rites, etc., and… …
59Lead — (pronEng|ˈlɛd) is a main group element with a symbol Pb ( la. plumbum). Lead has the atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish white color when freshly cut, but… …
60Limestone — For other uses, see Limestone (disambiguation). Limestone Sedimentary Rock Limestone in Waitomo District, New Zealand Composition …
