Avaliando as aproximações usadas no ensino de Físico-Química

The approaches are part of the everyday of the Physical Chemistry. In many didactic books in the area of Chemistry, the approaches are validated starting from qualitative and not quantitative approaches. We elaborated some examples that allow evaluating the quantitative impact of the approaches, bei...

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Bibliographic Details
Published in:Química nova 1999-07, Vol.22 (4), p.611-613
Main Authors: Costa Júnior, Joaquim Soares da, Silva, Francisco Carlos Marques da, Moita Neto, José Machado
Format: Article
Language:English
Subjects:
approximation
physical chemistry teaching
precision
stirling approach
Online Access:Get full text
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Summary:The approaches are part of the everyday of the Physical Chemistry. In many didactic books in the area of Chemistry, the approaches are validated starting from qualitative and not quantitative approaches. We elaborated some examples that allow evaluating the quantitative impact of the approaches, being considered the mistake tolerated for the approximate calculation. The estimate of the error in the approaches should serve as guide to establish the validity of the calculation, which use them. Thus, the shortcut that represents a calculation approached to substitute accurate calculations; it can be used without it loses of quality in the results, besides indicating, as they are valid the adopted criterions.
ISSN:0100-4042
1678-7064
DOI:10.1590/S0100-40421999000400021