(bromine)
71Great Lakes Chemical Corporation — is a chemical research, production, sales and distribution company that produces specialty chemicals used for polymers, fire suppressants and retardants, pool and spa water purification systems and various other applications. Since 2005 it has… …
72Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
73chemical kinetics — Introduction the branch of physical chemistry (chemistry) that is concerned with understanding the rates of chemical reactions (chemical reaction). It is to be contrasted with thermodynamics, which deals with the direction in which a… …
74Methylenedioxypyrovalerone — Systematic (IUPAC) name (RS) 1 (Benzo[d][1,3]dioxol 5 yl) 2 (pyrrolidin 1 yl)pentan 1 one …
75Br — abbr. British Rail. * * * noun a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water • Syn: ↑bromine, ↑atomic number 35 • Derivationally related forms: ↑bromic (for: ↑bromine), ↑bromi …
76brom- — combining form or bromo Etymology: International Scientific Vocabulary, probably from French brome bromine, from Greek brōmos bad smell 1. : bromine bromhydrate …
77Acid — This article is about acids in chemistry. For the drug, see Lysergic acid diethylamide. For other uses, see Acid (disambiguation). Acidity redirects here. For the novelette, see Acidity (Novelette). Acids and Bases …
78Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of …
79Protactinium — thorium ← protactinium → uranium Pr ↑ Pa ↓ …
80Nucleophile — A nucleophile is a species that donates an electron pair to an electrophile to form a chemical bond in a reaction. All molecules or ions with a free pair of electrons can act as nucleophiles. Because nucleophiles donate electrons, they are by… …
