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Direct linkSalah, Hazzi; Dumon, Alain – Chemistry Education Research and Practice, 2014
The concept of covalent bonding is characterized by an interconnected knowledge framework based on Lewis and quantum models of atoms and molecules. Several research studies have shown that students at all levels of chemistry learning find the quantum model to be one of the most difficult subjects to understand. We have tried in this paper to…
Descriptors: Foreign Countries, Molecular Structure, Science Instruction, Questionnaires
Boukhechem, Mohamed-Salah; Dumon, Alain; Zouikri, Mohamed – Chemistry Education Research and Practice, 2011
In this work we evaluated the level of difficulty found in learning stereochemistry concepts, by students intending to teach physical sciences at the Ecole Normale Superieure (ENS) Kouba (Algeria). A paper and pencil questionnaire was administered to 170 students to evaluate: their familiarity with Newman representations; their ability of linking…
Descriptors: Chemistry, Foreign Countries, Questionnaires, Scientific Concepts
Cokelez, Aytekin; Dumon, Alain; Taber, Keith S. – International Journal of Science Education, 2008
The purpose of this study is to identify how upper secondary school French students (Grade 10-12) interpret chemical transformation with regards to the changes within molecules and atoms, and in terms of intramolecular and/or intermolecular bond breaking. In order to identify and describe the students' assimilated knowledge, four questions were…
Descriptors: Case Studies, Chemistry, Scientific Concepts, Grade 9
