LA REACTION CHIMIQUE UN CONCEPT INTEGRATEUR DE LA CHIMIE
CHEMICAL REACTION AN INTEGRATOR CONCEPT OF CHEMISTRY
Published by: Studia Universitatis Babes-Bolyai
Keywords: conceptions; chemical conversion; equation balance sheet; substance.
Summary/Abstract: Generally it is very useful and benefic that every conceptualization to use the pupils conceptions. In this context the wrong conceptions may be improved and the right ones may form a cognitive structure that fulfils the function of a reception structure (the right conceptions of the pupils generate a cognitive state of expectation) and a supporting function (the pupils renders and assimilates the scientific notions based on the existing concepts) This article gives-away partially the forming operation of the incorporation concept of the chemical reaction. In this way there are tests applied on a great number of pupils that distinguishes a series of pupil’s conceptions (right, half-scientific or wrong conceptions) regarding the chemical conversion. These conceptions have been structured and based on a criteria of psycho-genetic development of the pupils and the criteria of the presence of a connection between the notion of „substance” and „chemical conversion”. Finally the relevant conceptions by testing always on one hand to give-away the inherent obstacles forming the concept of chemical reaction and on the other hand the right germination of that concept.
- Issue Year: 53/2008
- Issue No: 2
- Page Range: 133-141
- Page Count: 9
- Language: French