Researchers at Baylor College of Medicine have identified a group of potential substitutes for bisphenol A (BPA) that lack the adverse effects typically associated with BPA. The researchers used automated microscopy- and ...
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Every week, there seems to be another story about the health benefits of running. That's great—but what if you can't run? For the elderly, obese or otherwise mobility-limited, the rewards of aerobic exercise have long been ...
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Michigan State University researchers have discovered that a chemical compound, and potential new drug, reduces the spread of melanoma cells by up to 90 percent.
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Scientists have found Ebola's Achilles' heel: a new kind of chemical compound can block the protein Ebola uses to break out of cells and infect new cells. The compounds, revealed in a new paper in Bioorganic & Medicinal Chemistry ...
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A drug for breast cancer that is more effective than existing medicines may be a step closer thanks to new research.
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Scientists at Umeå Centre for Microbial Research (UCMR) have discovered chemical compounds which are able to attenuate the virulence of the bacterial human pathogen Listeria monocytogenes. Their findings are published today ...
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In a paper published in Nature Biotechnology, researchers from the Broad Institute of MIT and Harvard and the Dana-Farber Cancer Institute describe a new method that dramatically simplifies an arduous experimental process ...
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Researchers have successfully disrupted a genetic chain of events in a mouse model of schizophrenia and reversed memory deficits, one of the disorder's most difficult-to-treat symptoms. This discovery—which builds upon ...
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In a quest to stay healthy, many people are seeking natural ways to prevent neurodegenerative diseases. Recent studies show that pomegranate extract, which is a rich source of disease-fighting polyphenols, can help protect ...
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Obesity is a major risk factor for developing colorectal cancer, the second leading cause of cancer deaths in the United States. But someday doctors may be able to lessen the effect of that risk factor.
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A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions and that have a unique and defined chemical structure. Chemical compounds consist of a fixed ratio of atoms that are held together in a defined spatial arrangement by chemical bonds. Chemical compounds can be compound molecules held together by covalent bonds, salts held together by ionic bonds, metallic compounds held together by metallic bonds, or complexes held together by coordinate covalent bonds. Substances such as pure chemical elements and elemental molecules consisting of multiple atoms of a single element (such as H2, S8, etc.) are not considered chemical compounds.
Elements form compounds to become more stable. They become stable when they have the maximum number of possible electrons in their outermost energy level, which is normally two or eight valence electrons. This is the reason that noble gases do not frequently react: they already possess eight valence electrons (the exception being helium, which requires only two valence electrons to achieve stability).
This text uses material from Wikipedia, licensed under CC BY-SA
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