etching chemical
81Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …
82Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …
83Sodium hydroxide — Sodium hydroxide …
84dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …
85Diamond — This article is about the mineral. For the gemstone, see Diamond (gemstone). For other uses, including the shape ◊, see Diamond (disambiguation) …
86Cooper Union — Coordinates: 40°43′45″N 73°59′26″W / 40.72927°N 73.99058°W / 40.72927; 73.99058 …
87Perfluorooctanoic acid — IUPAC name pentadecafluorooctanoic acid …
887440-63-3 — Xénon Pour les articles homonymes, voir Xenon. Xénon …
89Projecteurs bi-xénon — Xénon Pour les articles homonymes, voir Xenon. Xénon …
90fluorine — /floor een, in, flawr , flohr /, n. Chem. the most reactive nonmetallic element, a pale yellow, corrosive, toxic gas that occurs combined, esp. in fluorite, cryolite, phosphate rock, and other minerals. Symbol: F; at. wt.: 18.9984; at. no.: 9.… …
