News tagged with chemical

Related topics: environmental protection agency , environmental health perspectives , breast cancer , bpa , molecules

Flame retardants linked to preterm birth

Researchers at The University of Texas Medical Branch have determined that maternal exposure to high levels of flame-retardants may be a contributing factor in preterm births.

Jan 28, 2015
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Study warns about bisphenol A substitutes

Two substitutes for bisphenol A, a plastic ingredient banned in some countries over health fears, are also a source of concern, French researchers warned Thursday.

Jan 15, 2015
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Chemical reaction

A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.

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