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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.
The SAT Subject Test in Chemistry was a one-hour multiple choice test given on chemistry by The College Board. A student chose whether to take the test depending upon college entrance requirements for the schools in which the student was planning to apply. Until 1994, the SAT Subject Tests were known as Achievement Tests; until January 2005 ...
Children mix chemicals in test tubes as part of a hands-on chemistry education program in Samara, Russia. Chemistry education (or chemical education) is the study of teaching and learning chemistry. It is one subset of STEM education or discipline-based education research (DBER). [1] Topics in chemistry education include understanding how ...
The Senate has passed a $105 billion bill designed to improve safety and customer service for air travelers, a day before the law governing the Federal Aviation Administration expires. The ...
Flow chemistry is a well-established technique for use at a large scale when manufacturing large quantities of a given material. However, the term has only been coined recently for its application on a laboratory scale by chemists and describes small pilot plants, and lab-scale continuous plants. [1] Often, microreactors are used.
Physical properties. Pure sodium hydroxide is a colorless crystalline solid that melts at 318 °C (604 °F) without decomposition and boils at 1,388 °C (2,530 °F). It is highly soluble in water, with a lower solubility in polar solvents such as ethanol and methanol. [14] Sodium hydroxide is insoluble in ether and other non-polar solvents.
The world’s leading public broadcaster is investing in pilots to demonstrate AI’s potential as a positive force in the media space
List of Schedule III controlled substances (U.S.) This is the list of Schedule III controlled substances in the United States as defined by the Controlled Substances Act at 21 U.S.C. § 812 (c) and 21 CFR 1308.13. The following findings are required for substances to be placed in this schedule: [1]
A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Tuberculosis ( TB ), also known colloquially as the " white death ", or historically as consumption, [7] is an infectious disease usually caused by Mycobacterium tuberculosis (MTB) bacteria. [1] Tuberculosis generally affects the lungs, but it can also affect other parts of the body. [1] Most infections show no symptoms, in which case it is ...