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  2. United States National Chemistry Olympiad - Wikipedia

    en.wikipedia.org/wiki/United_States_National...

    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.

  3. ACS style - Wikipedia

    en.wikipedia.org/wiki/ACS_style

    The ACS Style is a set of standards for writing documents relating to chemistry, including a standard method of citation in academic publications, ...

  4. Practical Test Standards - Wikipedia

    en.wikipedia.org/wiki/Practical_Test_Standards

    The ACS not only replaced PTS but also combined or integrated the Knowledge Test Guide, Learning Statement Reference Guide, and Knowledge Exam Testing Matrix into a single standard. [2] [3] Several ratings, notably those for helicopter, and balloon, as well as flight instructor and aircraft mechanic certificates are still tested to the PTS.

  5. Chemical purity - Wikipedia

    en.wikipedia.org/wiki/Chemical_purity

    ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the Reagent Chemicals publication, issued by the ACS. [3] [4] It is suitable for food and laboratory uses. Reagent grade is almost as stringent as the ACS grade.

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  7. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    ACS 1: Airman Certification Standards [4] FAA pilot testing ACS 2: Audio control system ACU 1: Air condition unit ACU 2: Alternator control unit [2] Protection from alternator over-voltage. AD Airworthiness Directive: ADA Advisory area ADAHRS Air data attitude heading reference system ADC Air data computer: ADD Acceptable deferred defect ADF ...

  8. American Chemical Society - Wikipedia

    en.wikipedia.org/wiki/American_Chemical_Society

    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 ...

  9. Naval Air Training and Operating Procedures Standardization

    en.wikipedia.org/wiki/Naval_Air_Training_and...

    NATOPS exams consist of an open book examination, a closed book examination, an oral examination, and an evaluation flight or simulator check. Use of operational flight trainers (OFTs) / weapons system trainers (WSTs) is encouraged for simulated emergencies and scenarios that present significantly increased risk when actually performed in an ...