Chemical reaction
hideA 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.
For more information about Chemical reaction, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with chemical
Scientists visualize how bacteria talk to one another
18 hours ago |
4.9 / 5 (9) |
1
Using imaging mass spectrometry, researchers at the University of California, San Diego have developed tools that will enable scientists to visualize how different cell populations of cells communicate. Their ...
Computer predicts reactions between molecules and surfaces, with 'chemical precision'
Chemistry / Analytical Chemistry
Nov 06, 2009 |
5 / 5 (1) |
0
Good news for heterogeneous catalysis and the hydrogen economy: computers can now be used to make accurate predictions of the reactions of (hydrogen) molecules with surfaces. An international team of researchers, headed by ...
New Synthetic Molecules Trigger Immune Response to HIV and Prostate Cancer
Nov 05, 2009 |
4.7 / 5 (9) |
0
(PhysOrg.com) -- Researchers at Yale University have developed synthetic molecules capable of enhancing the body’s immune response to HIV and HIV-infected cells, as well as to prostate cancer cells. Their ...
How Size Matters For Catalysts: Study Links Size, Activity, Electronic Properties
Nanotechnology / Nanomaterials
Nov 05, 2009 |
3.7 / 5 (3) |
0
(PhysOrg.com) -- University of Utah chemists demonstrated the first conclusive link between the size of catalyst particles on a solid surface, their electronic properties and their ability to speed chemical ...
Hybrid molecules show promise for exploring, treating Alzheimer's
Nov 04, 2009 |
5 / 5 (2) |
0
One of the many mysteries of Alzheimer's disease is how protein-like snippets called amyloid-beta peptides, which clump together to form plaques in the brain, may cause cell death, leading to the disease's devastating symptoms ...
Rosetta's final Earth boost
Space & Earth / Space Exploration
Nov 04, 2009 |
not rated yet |
0
ESA's comet chaser Rosetta will swing by Earth for the last time on 13 November to pick up energy and begin the final leg of its 10-year journey to comet 67P/Churyumov-Gerasimenko. ESA's European Space Operations ...
New findings bring hope for possible Parkinson's disease cure
Nov 03, 2009 |
5 / 5 (4) |
0
Researchers at Iowa State University have found an essential key to possibly cure Parkinson's disease and are looking for others.
Consumer advocates find BPA in food packaging
Nov 03, 2009 |
4.3 / 5 (3) |
0
A consumer advocacy group's analysis of canned goods has found measurable levels of the chemical additive bisphenol A across a range of foods, including some labeled "BPA-free."
'Fear detector' being developed
Nov 03, 2009 |
2.8 / 5 (6) |
11
(PhysOrg.com) -- British scientists are aiming to develop a device that can detect the smell of fear, and that could one day identify terrorists, drug smugglers, and other criminals.
Researchers design new strategy to find drugs to treat neglected infection
Nov 03, 2009 |
not rated yet |
0
Using an unconventional approach that they designed, University of Pittsburgh drug discoverers and their collaborators at Walter Reed Army Institute of Research have identified compounds that hold promise for treating leishmaniasis, ...
Where do nanomaterials go in the body?
Nanotechnology / Bio & Medicine
Nov 02, 2009 |
5 / 5 (1) |
1
Tiny, engineered nanomaterials can already be found in many consumer products, and have been hailed as having widespread future uses in areas ranging from medicine to industrial processes. However, little is known about what ...
Porphyrin Dimers Increase Efficiency of Dye-Sensitized Solar Cells
Oct 30, 2009 |
4.5 / 5 (12) |
1
(PhysOrg.com) -- Porphyrins are most commonly thought of as the pigment in red blood cells, but now scientists have found that porphyrins can also be used to increase the efficiency of an inexpensive type ...
Eco-friendly metal coating replacement for chromate
Oct 30, 2009 |
5 / 5 (2) |
1
(PhysOrg.com) -- CSIRO has developed a novel coating technology, "Quench Coat", to protect galvanised products from 'white rust' ? the form of zinc oxide that tarnishes freshly galvanised coatings, making ...
Gold Nanoparticles Delivery Platinum Warheads to Tumors
Nanotechnology / Bio & Medicine
Oct 29, 2009 |
4.9 / 5 (7) |
2
(PhysOrg.com) -- Cisplatin is one of the most powerful and effective drugs for treating a wide variety of cancers, but serious side effects ultimately limit the drug's use and effectiveness. Now, however, researchers have ...
Widely used cholesterol-lowering drug may prevent progression
Medicine & Health / Neuroscience
Oct 29, 2009 |
5 / 5 (2) |
0
Simvastatin, a commonly used, cholesterol-lowering drug, may prevent Parkinson's disease from progressing further. Neurological researchers at Rush University Medical Center conducted a study examining the use of the FDA-approved ...
