hot atom chemistry

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• Hot atom — In physical chemistry, a hot atom is an atom that has a high translational energy.When molecule AB adsorbs on a surface dissociatively, # both A and B adsorb on the surface, or # only A adsorbs on the surface, and B desorbs from the surface.In… …   Wikipedia

• chemistry — 1. The science concerned with the atomic composition of substances, the elements, and their interreactions, as well as the formation, decomposition, and properties of molecules. 2. The chemical properties of a substance. 3. Chemical processes. [G …   Medical dictionary

• chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …   Universalium

• industrial polymers, chemistry of — Introduction       structure and composition of chemical compounds made up of long, chainlike molecules (molecule).       What distinguishes polymers from other types of compounds is the extremely large size of the molecules. The size of a… …   Universalium

• Cracking (chemistry) — In petroleum geology and chemistry, cracking is the process whereby complex organic molecules such as kerogens or heavy hydrocarbons are broken down into simpler molecules such as light hydrocarbons, by the breaking of carbon carbon bonds in the… …   Wikipedia

• Saturation (chemistry) — In chemistry, saturation (from the Latin word saturare, meaning to fill[1]) has six different meanings, all based on reaching a maximum capacity In physical chemistry, saturation is the point at which a solution of a substance can dissolve no… …   Wikipedia

• Forensic chemistry — is the application of chemistry to law enforcement or the failure of products or processes. Many different analytical methods may be used to reveal what chemical changes occurred during an incident, and so help reconstruct the sequence of events …   Wikipedia

• iron processing — Introduction       use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting.       Iron (Fe) is a… …   Universalium

• Nonthermal surface reaction — In the field of physical chemistry, a nonthermal surface reaction refers to an elementary reaction between a thermally accommodated adsorbed surface species and a reactant which has not yet thermally accommodated to the surface. The two main… …   Wikipedia

• fat and oil processing — ▪ chemistry Introduction       method by which animal and plant substances are prepared for eating by humans.       The oil and fat products used for edible purposes can be divided into two distinct classes: liquid oils, such as olive oil, peanut …   Universalium

• Mathematics 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… …   Universalium