Estequiometría y ley de conservación de la masa: una relación a analizar desde la perspectiva de los lenguajes químicos

AUTOR(ES)
FONTE

Ciênc. educ. (Bauru)

DATA DE PUBLICAÇÃO

2015-03

RESUMO

The present article is focused on stoichiometry problems written in different chemical languages in which drawings represent atoms behavior at the initial and final state of a reaction. The analysis leads to the need to be aware of the special constraints of each chemical language. A discussion on what teachers say, how they use chemical languages and model-based scientific explanations and how they assess students is presented. These reflections give insights into the meaning of "talking chemistry".

ASSUNTO(S)

chemistry teaching chemical language stoichiometry concepts

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