Programs on Activity Guides and Learning Difficulties of the Classificatory Concepts in Solutions

Abstract

The difficulties of learning chemical concepts have been the subject of research for several years. The explanations that have emerged from them are classified in two groups: the first are those derived from the teaching process, and the second are those derived from nature and complexity, typical of the abstract nature of chemical concepts. Other approaches to the study of these difficulties include, on one hand, those arising from the relationship between the mental capacity of students and the demand for a task and, secondly, the lack of meaning and conceptual discrimination by students regarding signifiers associated to communication processes in the chemical context.