Estequiometría y ley de conservación de la masa: una relación a analizar desde la perspectiva de ...

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 che...