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Atmospheric Chemistry > Radical Chain Reaction
The following information is about Radical Chain Reaction.
Radical Chain Reaction Defined
Free radicals are molecules that, through photolysis or chemical reaction, have an unpaired electron in their outer valance shell. These radicals are very reactive and thus have a short life. When a free radical reacts with a more stable molecule, the radical often pulls an atom from it and becomes a stable molecule itself. The original molecule then becomes a free radical and will react with other species of atoms and molecules in a long series (or chain) of reactions until the process reaches the termination phase. In this phase two free radicals combine, sharing the pair of electrons and breaking the chain. [Journal of Organic Chemistry; v56; p5743-5; 1991.] [Journal of Organic Chemistry; v58; p3953-9; 1993.]
This definition is in context to Atmospheric Chemistry. See more contextual defintions for Radical Chain Reaction.
Yes, free radicals age us, but scientists still seek the bigger picture
Published November 16, 2008, 11:14 pm, Arizona Daily Star
WASHINGTON — Growing old isn't for sissies, the saying goes. The passage of years usually brings physical frailty, failing memory, cancer and other diseases.
Free-radical theory of aging may need adjustment
Published November 16, 2008, 10:17 pm, Fort Worth Star-Telegram
By ROBERT S. BOYD WASHINGTON — As more people live longer, scientists are stepping up their efforts to understand the biological process of aging. Recent research is changing their views on how and why we age. For half a century, much of the deterioration that comes over time has been blamed on free radicals, unstable molecules of oxygen running amok in the cells of your body. A free-radical ...
Scientists learning more about why, how we age
Published November 16, 2008, 5:26 am, The State
Growing old isn't for sissies, the saying goes. The passage of years usually brings physical frailty, failing memory, cancer and other diseases. As more people live longer, scientists are stepping up their efforts to understand the biological process of aging. Recent research is changing their views on how and why we age. For half a century, much of the deterioration that comes over time has ...
Scientists learning more about why, how we age
Published November 16, 2008, 5:16 am, The Charlotte Observer
(By ROBERT S. BOYD, McClatchy Newspapers) Growing old isn't for sissies, the saying goes. The passage of years usually brings physical frailty, failing memory, cancer and other diseases. As more people live longer, scientists are stepping up their efforts to understand the biological process of aging. Recent research is changing their views on how and why we age. For half a century, much of the ...
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