06 Chem Nomen

Chemical Nomenclature
Practice Test Available Below

    Determine, in a timely manner, the names and formulas of 50 different organic and inorganic compounds


  • This event must be completed by a team of 3 students.
  • Each of the three students will work independently on separate tests at the same time.   Once they have completed their test, a raw score will be determined by combining the scores of the three individuals.
  • Students will be required to name:
    • common ions (ex: nitrate)
    • salts (ex: NaCl)
    • binary molecular compounds (ex: CO2)
    • Acids (ex:  H3PO4)
    • common substances (ex:  gypsum, brimstone)
    • organic compounds (ex: dichlorobenzene)
    • coordination compounds (ex: tetrachloronitrocobalt (III) chloride)
  • The test must be completed within a 25-minute session.
  • Schools with multiple teams must compete during the same session.
  • A computerized test customized for the NJCO will be used in this competition.  Two examples of the computerized test are available using the files linked at the bottom of this webpage.  Please note that this file uses Adobe Shockwave.  The password to start the quiz is njco.
  • In many cases, more than one answer is accepted by the program.  Certain notation such as use of parentheses and brackets correctly must be entered correctly.  Therefore, it is imperative that students familiarize themselves with using the testing platform we will be using. 
NOTE:  The practice test that is available is set to show you the acceptable answers after five incorrect attempts at a question.  No answers will be provided the day of the event.  Questions will be presented one at a time in a random format.  Students may not fast-foward to or return to a test question after an unsuccessful attempt. 
Judging Criteria
  • Teams earn up to 2 points for each answer (between 0.2 - 2.0 points) for a total individual score of 100 points. The time taken to complete the test will also be considered in scoring.  The team’s score for this event will be determined by averaging the three individual scores.  
  • The American version of the rules of nomenclature as established by the International Union of Pure and Applied Chemistry (IUPAC), found in the most recent edition of the CRC Handbook of Chemistry & Physics will be used in guiding judging.

Event designed by Natalie Macke, ACS-TA

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Natalie Macke,
Apr 7, 2013, 11:03 AM
Natalie Macke,
May 10, 2013, 12:33 PM