Chemistry International Blank Image
Chemistry International Text Image Link to Chemistry International Blank Image Chemistry International Blank Image Chemistry International Blank Image
Chemistry International Blank Image
Chemistry International Blank Image
Chemistry International Text Image Link to Current Issue
Chemistry International Text Image Link to Past Issues
Chemistry International Text Image Link to Officer's Columns
Chemistry International Text Image Link to Features
Chemistry International Blank Image
Chemistry International Text Image Link to Up for Discussion
Chemistry International Text Image Link to IUPAC Wire
Chemistry International Text Image Link to Project Place
Chemistry International Text Image Link to imPACt
Chemistry International Text Image Link to Bookworm
Chemistry International Text Image Link to Internet Connections
Chemistry International Text Image Link to Conference Call
Chemistry International Text Image Link to Where 2B and Y
Chemistry International Text Image Link to Symposia
Chemistry International Text Image Link to CI Indexes
Chemistry International Text Image Link to CI Editor
Chemistry International Text Image Link to Search Function
Chemistry International Text Image Link to Information

 

Chemistry International Text Image Link to Previous Issue Chemistry International Text Image Link to Previous Page Chemistry International Text Image Link to This TOC Chemistry International Text Image Link to Next Page Chemistry International Text Image Link to Next Issue

Vol. 27 No. 5
September-October 2005

Up for Discussion | A forum for members and member organizations to share ideas and concerns.
Send your comments by e-mail to edit.ci@iupac.org

Simples and Compounds:Another Opinion

by Tomislav Portada and Vladimir Stilinovic

Although we do agree with Giomini et al. about the necessity of making a clear-cut distinction between elements and elementary substances,1 in our opinion it is superfluous to introduce new terms for these concepts. We believe that the problem originates in the current IUPAC definition of “chemical element.”2 We suggest limiting the definition of chemical element to “A species of atoms; all atoms with the same number of protons in the atomic nucleus.”

We also suggest introducing “elementary substance” as a separate term defined as “A pure chemical substance composed of atoms of the same element.” The current problems would be circumvented by using these terms strictly according to the above-suggested definitions.

References
1 C. Giomini, M.E. Cardinali, and L. Cardellini, Chem. Int., 2005 (1), 18.
2 IUPAC: Compendium of Chemical Terminology (The Gold Book), 2nd edition, Blackwell Science, 1997.

Tomislav Portada <tportad@irb.hr> is a research assistant in the Laboratory of Supramolecular and Nucleoside Chemistry, Department of Chemistry and Biochemistry, Ruder Boškovic Institute, in Zagreb, Croatia. Vladimir Stilinovic is a Ph. D. student from the Faculty of Science of the University of Zagreb.


Page last modified 30 August 2005.
Copyright © 2003-2005 International Union of Pure and Applied Chemistry.
Questions regarding the website, please contact edit.ci@iupac.org
Link to CI Home Page Link to IUPAC E-News Link to IUPAC Home Page