Energy & Green Tech
Scientists from the University of California, Los Angeles (UCLA) and Solargiga Energy in China have discovered that caffeine can help make a promising alternative to traditional solar cells more efficient at converting light ...
Apr 25, 2019
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3742
Energy & Green Tech
Scientists led by a team at Caltech have developed a new method for potentially removing nearly all sulfur compounds from gas and diesel fuel.
Feb 27, 2017
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393
Energy & Green Tech
For decades, most of the wastewater from the Mahou San Miguel brewery in the northeastern Spanish city of Lleida was flushed down the drain.
Feb 13, 2024
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1
Energy & Green Tech
Fluorine can be a beneficial ingredient in medicines because of its excellent pharmacological properties, according to Phillip Milner, assistant professor of chemistry and chemical biology in the College of Arts and Sciences ...
Oct 11, 2023
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1
Machine learning & AI
Artificial Intelligence (AI) is moving fast and will become an important support tool in clinical care. Research suggests AI algorithms can accurately detect melanomas and predict future breast cancers.
May 4, 2023
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14
Energy & Green Tech
An interdisciplinary team of researchers at Worcester Polytechnic Institute (WPI) has developed a potential breakthrough in green aviation: a recipe for a net-zero fuel for planes that will pull carbon dioxide (CO2) out of ...
Nov 29, 2022
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25
Robotics
Scientists are working on diagnostic techniques that could sniff out chemical compounds from breath, sweat, tears and other bodily emissions and that act as fingerprints of thousands of diseases.
Jun 30, 2022
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52
Energy & Green Tech
Batteries do the heavy lifting to store excess solar energy on power grids for use after sundown, but to operate, they also rely on pricey elements like platinum.
May 5, 2022
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25
Energy & Green Tech
Redox‑flow batteries store electrical energy in chemical compounds that are dissolved in an electrolyte. They are a particularly promising alternative to lithium‑ion batteries as stationary energy storage. A team headed ...
May 31, 2021
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7
Internet
The visibility of scientific articles and conference papers is conditional upon being easily found in academic search engines, especially Google Scholar. To enhance this visibility, search engine optimization (SEO) has been ...
Feb 10, 2021
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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).
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