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Esselman, Brian J.; Block, Stephen B. – Journal of Chemical Education, 2019
The VSEPR model has well-established limitations in its ability to represent accurate molecular and electronic geometries of simple molecules, which can create a significant need for students to relearn structure and bonding concepts in organic chemistry. We present an alternate method for describing molecular geometries and electronic structures…
Descriptors: Science Instruction, College Science, Undergraduate Study, Scientific Concepts
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Niece, Brian K. – Journal of Chemical Education, 2019
Models were prepared by 3D printing that can be used to demonstrate the operations required for the study of molecular symmetry. The models were designed to emphasize the order and locations of rotation axes and to clearly illustrate the more abstract reflection and improper rotation axes. The models were well-received by students in a course on…
Descriptors: Molecular Structure, Computer Peripherals, Science Instruction, Teaching Methods
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Wu, Nancy; Hall, Ariana O.; Phadke, Sameer; Zurcher, Danielle M.; Wallace, Rachel L.; Castañeda, Carol Ann; McNeil, Anne J. – Journal of Chemical Education, 2019
Introductory-level laboratory courses provide students with hands-on experience using the discipline's tools and theories. These courses often rely on recipe-based experiments due to the constraints of large enrollments, short lab periods, and the desire to minimize complexity. In addition, covering a breadth of topics can lead to a fragmented…
Descriptors: Science Instruction, Learning Strategies, Undergraduate Students, Laboratory Experiments
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Nawarathne, Irosha N. – Journal of Chemical Education, 2019
An introductory organic chemistry course is a gate keeper to the science pipeline. Instructors can improve student learning by making deliberate efforts to understand and accommodate the various levels of classroom diversity. The changes in the demographics of the United States and the national push to cultivate women and minorities in the…
Descriptors: Organic Chemistry, Introductory Courses, Student Diversity, Females
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Rivadulla, Francisco – Journal of Chemical Education, 2019
The Maxwell distribution of speeds, f(v), is the starting point for the calculation of the transport coefficients in kinetic-molecular theory. Most physical chemistry textbooks follow a path to derive f(v) similar to that used by Maxwell, which makes it difficult for students to understand its relationship with the equilibrium state of the system,…
Descriptors: Molecular Structure, Theories, Science Instruction, Chemistry
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Vahedi, Amid; Farnoud, Amir M. – Journal of Chemical Education, 2019
The increasing industrial and biomedical applications of nanomaterials have enhanced the need to educate a well-trained nanotechnology workforce. This need has led to efforts to introduce hands-on, nanotechnology-based, experimental modules into high school and college level courses in science and engineering. However, the majority of such efforts…
Descriptors: Chemical Engineering, Science Instruction, Molecular Structure, Technology
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Rubner, Isabel; Berry, Ashton J.; Grofe, Theodor; Oetken, Marco – Journal of Chemical Education, 2019
A significant challenge for the global community is the increasing demand for clean and renewable energy technologies. However, a lack of knowledge of these technologies threatens to impede their adoption. The development of cheap, effective, and easy-to-use chemical and electrochemical storage technologies is crucial if countries are to move away…
Descriptors: Energy Conservation, Science Instruction, Chemistry, Hands on Science
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Gascon, Katherine N.; Weinstein, Steven J.; Antoniades, Michael G. – Journal of Chemical Education, 2019
The effect of surfactant adsorption on surface tension, as well as associated thermodynamic concepts are introduced in a laboratory experiment designed for undergraduate students. Using a reliable and accessible method, students measure the surface tension of aqueous solutions at different concentrations of sodium dodecyl sulfate. Students collect…
Descriptors: Science Instruction, Thermodynamics, Scientific Concepts, Science Laboratories
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Croisant, Michael; Bretz, Stacey Lowery; Konkolewicz, Dominik – Journal of Chemical Education, 2019
The ACS Guidelines for bachelor's degrees in chemistry call for the curriculum to include polymer chemistry principles and the synthesis of different classes of macromolecules. Organic chemistry can provide an important introduction to polymer chemistry principles, and photochemically induced radical polymerization is one method for generating…
Descriptors: Chemistry, Science Instruction, Inquiry, Discovery Learning
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D'eon, Jessica C.; Faust, Jennifer A.; Browning, C. Scott; Quinlan, Kristine B. – Journal of Chemical Education, 2019
A safe and inexpensive laboratory for a first-year general chemistry course has been developed which allows students to explore important properties of carbon dioxide, particularly its behavior as a greenhouse gas. Students witness and measure air displacement to compare calculated gas densities and pressures inside a CO[subscript 2]-filled…
Descriptors: Science Laboratories, Chemistry, Scientific Concepts, College Science
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Harris, C.; Gaster, C.; Gelabert, M. C. – Journal of Chemical Education, 2019
Synthesis and characterization of nanomaterials yields opportunities for instruction of related topics in solution chemistry and materials science, as well as spectroscopy connecting to band theory, the "particle in a box" quantum mechanical model, and thermodynamics. In collaboration with an undergraduate research assistant, we have…
Descriptors: Science Instruction, Science Experiments, Chemistry, Thermodynamics
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Dean, Natalie L.; Ewan, Corrina; Braden, Douglas; McIndoe, J. Scott – Journal of Chemical Education, 2019
Comprehension of the 3D structure of objects usually represented in 2D is a critical part of understanding molecular geometries. The frequency with which students actually get hands-on with 3D molecular structures is often limited to a singular laboratory session. We sought to develop a set of molecular shapes that were inexpensive enough not only…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Science Laboratories
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Warzecha, Evan; Berto, Timothy C.; Wilkinson, Chad C.; Berry, John F. – Journal of Chemical Education, 2019
A new undergraduate inorganic chemistry laboratory experiment is presented. An introduction of the spectrochemical series and ligand exchange is explored using the coordination complex dirhodium tetraacetate, Rh[subscript 2](OAc)[subscript 4]. Students have measured the absorption spectra of the Rh[subscript 2] complex in the presence of various…
Descriptors: Laboratory Experiments, Science Instruction, Molecular Structure, Chemistry
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Pérez-Mariño, Ángel M.; Blanco, M. Carmen; Buceta, David; López-Quintela, M. Arturo – Journal of Chemical Education, 2019
Until now, the concept of metal (0) atomic quantum clusters or nanoclusters (NCs) and their increasing role in nanotechnology due to their novel and exceptional properties in important industrial fields (such as catalysis) has not been included at the education level. Here, syntheses of both metal nanoparticles (NPs) and metal nanoclusters (with…
Descriptors: Science Instruction, Chemistry, Laboratory Experiments, Molecular Structure
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Young, Michael C.; Djernes, Katherine E.; Payton, John L.; Liu, Daniel; Hooley, Richard J. – Journal of Chemical Education, 2019
In response to the call for an increased emphasis from the American Chemical Society on including macromolecular studies in the undergraduate curriculum, a supramolecular-themed experiment was designed for undergraduate-level organic laboratory courses that provides a convenient platform to study physical behaviors of supramolecular assemblies.…
Descriptors: Science Instruction, Scientific Concepts, Undergraduate Study, College Science
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