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Dood, Amber J.; Fields, Kimberly B.; Raker, Jeffrey R. – Journal of Chemical Education, 2018
The Lewis acid-base model is key to identifying and explaining the formation and breaking of bonds in a large number of reaction mechanisms taught in the sophomore-level year-long organic chemistry course. Understanding the model is, thus, essential to success in organic chemistry coursework. Concept-inventories exist to identify misunderstandings…
Descriptors: Science Instruction, College Science, Undergraduate Study, Scientific Concepts
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Gibbons, Rebecca E.; Laga, Emily E.; Leon, Jessica; Villafan~e, Sachel M.; Stains, Marilyne; Murphy, Kristen; Raker, Jeffrey R. – Journal of Chemical Education, 2017
Research on classroom response systems (CRSs) in chemical education has primarily focused on the development of evidence-based strategies for implementation and novel practitioner uses of CRSs in instructional practice. Our national survey of postsecondary chemistry faculty extends these discussions, providing a broad-based understanding of the…
Descriptors: Undergraduate Students, College Science, Chemistry, Audience Response Systems
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Molek, Karen Sinclair; Reyes, Karl A.; Burnette, Brandon A.; Stepherson, Jacob R. – Journal of Chemical Education, 2015
Measuring the heat capacity ratios, ?, of gases either through adiabatic expansion or sound velocity is a well established physical chemistry experiment. The most accurate experiments depend on an exact determination of sound origin, which necessitates the use of lasers or a wave generator, where time zero is based on an electrical trigger. Other…
Descriptors: Heat, Science Instruction, Science Experiments, Acoustics