News tagged with chemical

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

What to expect from big pharma in 2017

Last year, the Food and Drug Administration approved just 22 new therapeutic drugs, which is less than half the number approved in 2015. The cover story in Chemical & Engineering News (C&EN), the weekly newsmagazine of the ...

Feb 01, 2017
popularity0 comments 0

A brain wide chemical signal that enhances memory

How does heightened attention improve our mental capacity? This is the question tackled by new research published today in the journal Cell Reports, which reveals a chemical signal released across the brain in response to ...

Jan 24, 2017
popularity1683 comments 1

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.

This text uses material from Wikipedia, licensed under CC BY-SA

Subscribe to rss feed