Stručni rad

https://doi.org/10.15255/KUI.2017.018

Chemistry in Education:
How to Understand the Concept of Metal

Nenad Raos ; Institut za medicinska istraživanja i medicinu rada, Ksaverska c. 2, 10 000 Zagreb
Nenad Raos (ur.)

Sažetak

The concept of metal is not, strictly speaking, scientific (chemical) but traditional, arising from the ancient miners’ tradition and the search for the artificial production of gold, the most perfect metal of the alchemists. Closer analysis reveals, however, that there are no universal properties of metals, and that virtually every chemical element could be regarded as metal as well as nonmetal. The metalic character of an element depends on its chemical combination. This is visible from the comparison of “metallic” compounds of nonmetals and “nonmetallic” compounds of metals, as well as from the nature of the chemical bond (covalent/ionic), as deduced from the difference in electronegativity of the constituting atoms.


This work is licensed under a Creative Commons Attribution 4.0 International License.

Ključne riječi

chemical education; electronegativity; alotrophic modifications; history of chemistry

Hrčak ID:

206999

URI

https://hrcak.srce.hr/206999

Datum izdavanja:

10.12.2018.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.553 *