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The United States National Chemistry Olympiad (or USNCO) is a contest held by the American Chemical Society (ACS) used to select the four-student team that represents the United States at the International Chemistry Olympiad (IChO). Each local ACS section selects 10 students (or more for larger ACS sections) to take the USNCO National Exam. To ...
In 1874, a group of American chemists gathered at the Joseph Priestley House to mark the 100th anniversary of Priestley's discovery of oxygen.Although there was an American scientific society at that time (the American Association for the Advancement of Science, founded in 1848), the growth of chemistry in the U.S. prompted those assembled to consider founding a new society that would focus ...
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1]
National Chemistry Day, first celebrated in 1987 by members of the American Chemical Society (ACS), educators and other individual volunteers, was a vision of the former ACS President Dr. George C. Pimentel. [1] His goal was for ACS to hold a simultaneous event nationwide to impress on the public the importance of chemistry in everyday life.
Quaternary ammonium cation. The R groups may be the same or different alkyl or aryl groups. Also, the R groups may be connected. In organic chemistry, quaternary ammonium cations, also known as quats, are positively-charged polyatomic ions of the structure [NR 4] +, where R is an alkyl group, an aryl group [1] or organyl group.
The Journal of Organic Chemistry, colloquially known as JOC, is a peer-reviewed [1] scientific journal for original contributions of fundamental research in all branches of theory and practice [2] in organic and bioorganic chemistry. It is published by the publishing arm of the American Chemical Society, with 24 issues per year.
[2] [3] In 2010, ACS agreed to change the name of the journal to "Combinatorial Science" and it was the first and only ACS journal to be devoted to a way of doing science, rather than to a specific field of knowledge or application. [4] [5] The journal stopped accepting new submissions in August and the last issue was published in December 2020.
The National Standard Examination in Chemistry or NSEC is an examination in chemistry for higher secondary school students in India, usually conducted in the end of November. [1] The examination is organized by the Indian Association of Chemistry Teachers. Over 30,000 students, mainly from Standard 12, sit for this examination.