alternate water chemistry

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• Water activity — or aw is a measurement of the energy status of the water in a system. It is defined as the vapor pressure of water above a sample divided by that of pure water at the same temperature; therefore, pure distilled water has a water activity of… …   Wikipedia

• 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

• List of chemistry topics — This page aims to list articles related to chemistry. This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.This list is not necessarily… …   Wikipedia

• Lotic ecosystems — are the ecosystems of rivers, streams and springs. Included in these environments are the biotic interactions (amongst plants, animals and micro organisms) together with the abiotic interactions (physical and chemical). [Angelier (2003)] Lotic… …   Wikipedia

• DNA — For a non technical introduction to the topic, see Introduction to genetics. For other uses, see DNA (disambiguation). The structure of the DNA double helix. The atoms in the structure are colour coded by element and the detailed structure of two …   Wikipedia

• Halfbeak — label2= 2=Adrianichthyidae Phylogeny of the halfbeaks. The halfbeak family Hemiramphidae (Zenarchopterinae + Hemirhamphinae) is paraphyletic. [Nathan R. Lovejoy, Mahmood Iranpour, and Bruce B. Collette. 2004. Phylogeny and Jaw Ontogeny of… …   Wikipedia

• Climate Change-The Global Effects — ▪ 2008 Introduction by John Streicker       In 2007 the Intergovernmental Panel on Climate Change (IPCC) released its Fourth Assessment Report. Previous assessments (1990, 1995, 2001) had provided strong indications that by various measures the… …   Universalium

• separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

• Metal ions in aqueous solution — A metal ion in aqueous solution is a cation, dissolved in water, of chemical formula [M(H2O)n]z+. The solvation number, n, determined by a variety of experimental methods is 4 for Li+ and Be2+ and 6 for elements in rows 3 and 4 of the periodic… …   Wikipedia

• Titan (moon) — Titan Titan in 2005 by Cassini spacecraft Discovery Discovered by Christiaan Huygens …   Wikipedia

• textile — /teks tuyl, til/, n. 1. any cloth or goods produced by weaving, knitting, or felting. 2. a material, as a fiber or yarn, used in or suitable for weaving: Glass can be used as a textile. adj. 3. woven or capable of being woven: textile fabrics. 4 …   Universalium