Propuesta metodológica para la determinación de las causas de los errores experimentales y accidentes, en las prácticas de laboratorio de Química

Abstract

During the realization of the practices of laboratory of Chemistry it is frequent the occurrence of experimental errors and accidents, so much in the planning, organization and execution of these activities, in which the manipulation of reagents, apparatuses and equipments are included.  For the control of both events that happen in the experimental learning process, the use of the cause-effect diagrams is proposed.  In this work a methodology is described for the use of the diagram of cause-effect of the type it Pricks with thorns of Fish for the determination of the causes of the experimental errors and accidents of laboratories that the students make during the realization of the practices of laboratory of Chemistry. The use of the methodology on the part of the students will allow them the determination of the causes of its own experimental errors.  Using the methodology offers the student the possibility to form abilities to control and to evaluate the evolution of their activity.