When All You Have Is a Covalent Model of Bonding, Every Substance Is a Molecule: A Longitudinal Study of Student Enactment of Covalent and Ionic Bonding Models
When All You Have Is a Covalent Model of Bonding, Every Substance Is a Molecule: A Longitudinal Study of Student Enactment of Covalent and Ionic Bonding Models
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当你拥有的只是共价键合模型时,每种物质都是分子:对学生实施共价键合和离子键合模型的纵向研究
DOI:
10.1021/acs.jchemed.2c00188
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发表时间:
2022
影响因子:
3
通讯作者:
Lewis, Scott E.
中科院分区:
文献类型:
--
作者:
Bowe, Kathleen A.;Bauer, Christopher F.;Wang, Ying;Lewis, Scott E.
This longitudinal study examines the responses of students at two different institutions to creative exercises related to models of chemical bonding. Questions in the form of creative exercises required students to provide relevant, accurate, and distinct statements about two compounds for which they were provided only the formula and electronegativity values: SCl2and CaCl2. Students responded to the questions at the end of general chemistry, six months later, and one year later. Their responses were analyzed qualitatively and quantitatively to explore patterns in application of bonding ideas and change over time. The data reveal extensive application of covalent bonding ideas to an ionic compound, regardless of whether a student identified the substance as ionic or not, and that this is consistent over a year out. Implications for instruction of bonding models in general chemistry (and beyond) are discussed.
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