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Showing 106 to 120 of 275 results Save | Export
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Sarisky, Catherine A.; Johann, Timothy W. – Journal of Chemical Education, 2018
A semester-long hypothesis-driven laboratory project for second-semester biochemistry has been developed. Working independently, students propose a hypothesis about the role of one amino acid residue in the active site of 5,10-methenyltetrahydrofolate synthetase (MTHFS). They then test this hypothesis by site-directed mutagenesis of a plasmid…
Descriptors: Biochemistry, Science Instruction, Laboratory Experiments, Course Descriptions
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Sharma, A.; Kopkau, H.; Swanson, D. – Journal of Chemical Education, 2018
A laboratory experiment was designed for upper-level undergraduate students in a bioanalytical course to demonstrate the concept of isoelectric point (pI) and the theoretical and practical applications of isoelectric focusing (IEF). This simple and inexpensive IEF procedure requires the same minigel SDS-PAGE equipment that is already available in…
Descriptors: Undergraduate Students, Science Instruction, Scientific Concepts, Biochemistry
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Ison, A.; Ison, E. A.; Perry, C. M. – Journal of Chemical Education, 2017
An effective way of teaching undergraduates a full complement of research skills is through a multiweek advanced laboratory experiment. Here we outline a comprehensive set of experiments adapted from current primary literature focusing on organic and inorganic synthesis, catalysis, reactivity, and reaction kinetics. The catalyst,…
Descriptors: Science Instruction, College Science, Undergraduate Study, Chemistry
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Henry, Renee Monica – Journal of Chemical Education, 2017
Reported here is a study of an interactive component to General Chemistry I and General Chemistry II where a new pedagogy for taking notes in class was developed. These notes, called key word created class notes, prompted students to locate information using the Internet guided by a key word. Reference Web sites were added to a next generation of…
Descriptors: Science Instruction, College Science, Undergraduate Study, Web Based Instruction
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Jardine, Hannah E.; Friedman, Lee A. – Journal of Chemical Education, 2017
In this study, we describe a course to educate and prepare undergraduate "facilitators" for small group problem solving sessions in a large, first semester, introductory undergraduate organic chemistry course. We then explore the outcomes of the facilitator experience for one cohort of facilitators through qualitative analysis of written…
Descriptors: Organic Chemistry, Undergraduate Students, Facilitators (Individuals), Science Instruction
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Warner, Terence E.; Klokker, Mads Galsgaard; Nielsen, Ulla Gro – Journal of Chemical Education, 2017
Zeolite Y has an iconic crystal structure, but more importantly, the hydrogen modification zeolite H-Y is the classic example of a solid acid which is used extensively as a catalyst in the oil industry. This metastable compound cannot be synthesized directly, which creates an opportunity to discuss various preparative strategies with the students,…
Descriptors: Undergraduate Study, Inorganic Chemistry, Scientific Concepts, Science Instruction
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Fuson, Michael M. – Journal of Chemical Education, 2017
Laboratories studying the anisotropic rotational diffusion of bromobenzene using nuclear spin relaxation and molecular dynamics simulations are described. For many undergraduates, visualizing molecular motion is challenging. Undergraduates rarely encounter laboratories that directly assess molecular motion, and so the concept remains an…
Descriptors: College Science, Undergraduate Study, Chemistry, Science Instruction
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Perez-Arribas, Luis Vicente; Leon-González, María Eugenia; Rosales-Conrado, Noelia – Journal of Chemical Education, 2017
With the final objective of using computational and chemometrics tools in the chemistry studies, this paper shows the methodology and interpretation of the Principal Component Analysis (PCA) using pollution data from different cities. This paper describes how students can obtain data on air quality and process such data for additional information…
Descriptors: Science Instruction, Chemistry, Teaching Methods, Computer Assisted Instruction
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Davis, Eric J.; Pauls, Steve; Dick, Jonathan – Journal of Chemical Education, 2017
Presented is a project-based learning (PBL) laboratory approach for an upper-division environmental chemistry or quantitative analysis course. In this work, a combined laboratory class of 11 environmental chemistry students developed a method based on published EPA methods for the extraction of dichlorodiphenyltrichloroethane (DDT) and its…
Descriptors: Student Projects, Teaching Methods, Active Learning, Chemistry
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Silva, Thanuci; Galembeck, Eduardo – Journal of Chemical Education, 2017
Laboratory sessions are designed to develop the experimental skills and the acquaintance with instruments that may contribute to a successful career in Biochemistry and associated fields. This study is a report on improving a traditional Biochemistry course by devising the laboratory sessions as an inquiry-based environment to develop the…
Descriptors: Personal Autonomy, Biochemistry, Science Instruction, Worksheets
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Almendro Vedia, Víctor G.; Natale, Paolo; Chen, Su; Monroy, Francisco; Rosilio, Veronique; López-Montero, Ivan – Journal of Chemical Education, 2017
Since the first report of electroformed micrometer-sized liposomes in the 1980s, giant unilamellar vesicles (GUVs) have generated a lot of interest in the biophysical and biochemical communities. However, their penetration rate in high school or at the undergraduate level is still limited because of the requirement of specialized materials for…
Descriptors: Science Instruction, Telecommunications, Handheld Devices, Teaching Methods
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Smith, Garon C.; Hossain, Md Mainul – Journal of Chemical Education, 2017
Species TOPOS is a free software package for generating three-dimensional (3-D) topographic surfaces ("topos") for acid-base equilibrium studies. This upgrade adds 3-D species distribution topos to earlier surfaces that showed pH and buffer capacity behavior during titration and dilution procedures. It constructs topos by plotting…
Descriptors: Computer Software, Science Instruction, Educational Technology, Technology Uses in Education
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Carmel, Justin H.; Ward, Joseph S.; Cooper, Melanie M. – Journal of Chemical Education, 2017
One of the most mystifying products on the market for people at any age is the glow stick: a plastic tube that, when snapped, creates a flood of bright, brilliantly colored light without the use of electricity or significant production of heat. In this case, the chemiluminescence reaction also provides an exciting phenomenon through which we can…
Descriptors: Science Instruction, Cooperative Learning, Science Laboratories, College Science
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Cooper, Melanie M.; Posey, Lynmarie A.; Underwood, Sonia M. – Journal of Chemical Education, 2017
In this paper we discuss how and why core ideas can serve as the framework upon which chemistry curricula and assessment items are developed. While there are a number of projects that have specified "big ideas" or "anchoring concepts", the ways that these ideas are subsequently developed may inadvertently lead to fragmentation…
Descriptors: Science Instruction, Chemistry, College Science, Student Centered Learning
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Paik, Seoung-Hey; Kim, Sungki; Kim, Kihyang – Journal of Chemical Education, 2017
The four representative models that define oxidation-reduction reactions are often used differently in different situations or contexts in chemistry textbooks. Although integrated models have been suggested to overcome the confusion caused by this, they have not been successful. We therefore aim to interpret the causes for difficulties in the…
Descriptors: Science Instruction, Models, Classification, Secondary School Science
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