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Showing 1 to 5 of 5 for “"Lewis Structures"”.
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A comparison of two instructional methods for drawing Lewis structures
Two instructional methods for teaching Lewis structures were compared – the Direct Octet Rule Method (DORM) and the Commonly Accepted Method (CAM). The DORM gives the number of bonds and the number of nonbonding electrons immediately, while the CAM involves moving electron pairs from nonbonding to …
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Structural Chemistry of Silicon Phthalocyanines
Structures of a number of silicon phthalocyanines have been investigated using both experimental and theoretical methods. Single crystal structures have been determined for some of these silicon phthalocyanines. Various theoretical methods, including the density functional theory (DFT), …
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Development and analysis of educational technologies for a blended organic chemistry course
… chemistry, which has a unique semantic language (Lewis structures), the incorporation of shared video was a novel but important element of these activities. In fields for which mere text would not provide enough information in communications between students, video offers an appealing medium for …
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Use of Multiple Representations to Explore Students’ Understandings of Covalent and Ionic Bonding as Measured by the Bonding Representations Inventory
… communicate the concepts of bonding, including Lewis Structures, formulas, spacefilling models, and 3D manipulatives. As students learn to interpret these multiple representations, they may develop misconceptions that can create a problem in further learning of chemistry. Therefore, …
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The electron density : a bridge between exact quantum mechanics and fuzzy chemical concepts
… is often taught and rationalized by explaining Lewis structures, which, in turn, make extensive use of the valence concept. The valence concept distinguishes between electrons, which do not participate in chemical interactions (core electrons) and those, which do (single, double, triple bonds, …