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Salah, 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