Abstract

GALAGOVSKY, Lydia Raquel; DI GIACOMO, María Angélica  and  ALI, Salvador. Stoichiometry and the law of mass conservation: what can be hidden behind the simplification of the experts’ discourse. Ciência educ. [online]. 2015, vol.21, n.2, pp.351-360. ISSN 1516-7313.  https://doi.org/10.1590/1516-731320150020006.

A deep perspective on students’ misconceptions on stoichiometry and Mass Conservation Law is presented. An evaluation of chemical discourse through textbooks allows teachers to be aware of the meaning of “chemical reaction”, “reagents” and “products” when talking with students. In addition, an analysis of how the omission of historical and philosophical reflections may lead to students’ misconceptions is also presented.

Keywords : Stoichiometry; Mass conservation; Chemistry teaching; Chemical languages; Misconceptions.

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