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Cheng, Maurice M. W.; Gilbert, John K. – International Journal of Science Education, 2017
This paper proposes a model-based notion of "submicro representations of chemical reactions". Based on three structural models of matter (the simple particle model, the atomic model and the free electron model of metals), we suggest there are two major models of reaction in school chemistry curricula: (a) reactions that are simple…
Descriptors: Science Instruction, Chemistry, Scientific Concepts, Models
Cheng, Maurice M. W.; Gilbert, John K. – International Journal of Science Education, 2014
This study investigated the mental representations of metallic bonding and the malleability of metals held by three male students aged 14-15 (Year 10) who were attending a Hong Kong school. One student was selected by their chemistry teacher as representing each of the highest, the medium, and the lowest level of attainment in chemistry in a…
Descriptors: Foreign Countries, Chemistry, Science Instruction, Secondary School Science
Peer reviewed
Ingham, Angela; Gilbert, John K. – International Journal of Science Education, 1991
The uses that chemistry students (undergraduates, postgraduate, and trainee teachers) make of analog models when relating equations to projects were identified. Although only a restricted use of such models were found, and for none of the reasons valued by practicing chemists, patterns were identified. The implications for chemical education at…
Descriptors: Chemistry, Concept Formation, Foreign Countries, Higher Education