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Anna Laguta – Journal of Chemical Education, 2025
Colloidal stability is one of the most important criteria in the application strategy of colloidal nanoparticles in the continuous phase. The branches include ecology, involving coagulation as a purification method; medicine as nanocarriers; biology as blood coagulation, etc. A chemist versed in these concepts is a high-performing chemist in…
Descriptors: Science Experiments, Laboratory Experiments, Chemistry, Light
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Mo´nica I. Garci´a-Aranda; Marco Franco-Pe´rez; Angel Zamudio-Medina – Journal of Chemical Education, 2023
Heterocyclic compounds are an integral part of research, particularly in the pharmaceutical field. The synthesis of such compounds in an undergraduate laboratory can help students understand the relevance and importance of their field of study. Our experimental activity introduces a novel procedure to synthesize coumarin, a heterocyclic formed by…
Descriptors: Undergraduate Students, College Science, Chemistry, Laboratory Experiments
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Nicola´s Andre´s Saffioti; Carla Angelani; Jose´ Mari´a Delfino; Silvia Ferna´ndez Villamil; Gabriela Elena Go´mez; Irene Mangialavori; Mari´a Florencia Pignataro; Pablo Julio Schwarzbaum – Journal of Chemical Education, 2023
Metabolic Control Analysis (MCA) is a systems biology approach that measures the control of a metabolic step on the overall flux of a metabolic pathway. In undergraduate courses in biochemistry, learning of MCA can be encouraged by experimental activities demonstrating practical applications of the MCA theory. In this work, we present a laboratory…
Descriptors: Biochemistry, Metabolism, College Science, Undergraduate Students
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Harshitha, Ravikumar; Arunraj, Duraipandian Rex – Biochemistry and Molecular Biology Education, 2021
Real-time quantitative PCR is a technique used to monitor the PCR reaction in real time. RT-qPCR is broadly classified into two types based on its purpose: absolute and relative quantification. Absolute quantification is used in a wide array of fields such as microbiology, food technology, and biotechnology to quantify the microbiological…
Descriptors: Laboratory Procedures, Laboratory Experiments, College Science, Molecular Biology
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Samuel Fura; Samuel Abidemi Oluwole; Queen Assala Hakim; Hikari Sanchez; Daniela Toledo; Aline Andrea Quintana; Christian Agatemor – Journal of Chemical Education, 2023
Chemists have always designed and deployed cross-disciplinary approaches that interface chemistry with other disciplines to proffer solutions to many human problems. We designed a laboratory experiment that implements chemistry concepts in a biological model to prime undergraduate students to appreciate interdisciplinarity as an approach to…
Descriptors: Undergraduate Students, College Science, Science Experiments, Laboratory Experiments
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Rui-tang Guo; Cheng Xia; Wei-guo Pan – Journal of Chemical Education, 2023
The chemical experiment is designed for undergraduates majoring in chemistry, energy, and environment. The intended purpose is that the students will comprehend the reaction mechanism of photocatalytic reduction of CO[subscript 2] through hands-on experiments and deepen their understanding of sustainable energy technologies. More importantly, the…
Descriptors: Undergraduate Students, College Science, Laboratory Experiments, Scientific Concepts
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Bailie, Alexandra E.; Nortcliffe, Andrew – Journal of Chemical Education, 2021
A multistep synthesis of quinolone antibiotic analogues was developed as a laboratory experiment for intermediate/advanced undergraduate students. Students can synthesize a range of "des"fluoroenoxacin analogues via a five-step sequence. The experiment includes a range of key practical laboratory techniques including thin-layer…
Descriptors: Undergraduate Students, College Science, Laboratory Experiments, Advanced Students
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Isabella Guerrero; Charles A. Smith – International Society for Technology, Education, and Science, 2023
In case-based learning, students develop and apply course knowledge to solve tangible and "real life" problems. This practice can enhance student motivation and engagement in the analytical laboratory. In this application of case-based learning students analyze commercially available oils for CBD content. In the state of Texas anyone can…
Descriptors: Case Method (Teaching Technique), College Science, Science Laboratories, Laboratory Procedures
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Christianson, Anna M.; Waters, Carolyn A. – Journal of Chemical Education, 2022
We describe a guided-inquiry laboratory experiment for instrumental analysis in which our students test an improved protocol for the recycling of silver chloride to produce nontoxic waste. Students are provided with samples of silver chloride that they created as waste products in a previous lab experiment and tasked with performing a stepwise…
Descriptors: Inquiry, Active Learning, Science Experiments, Laboratory Experiments
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Varela, Carla L.; Cabral, Ana M. T. D. P. V.; Barbosa, Isabel R.; Costa, Saul C.; Silva, Elisiário J. T.; Roleira, Fernanda M. F. – Journal of Chemical Education, 2020
Amides are usually prepared using amines and acyl halides, which often implies a two-step procedure. Alternatively, coupling reagents can be used in a single-step reaction with good yields, which seems to be suitable for organic chemistry laboratory classes. This work was designed to synthesize "N"-hexylcinnamamide through a one-step…
Descriptors: Undergraduate Students, College Science, Science Experiments, Laboratory Experiments
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Czysz, Kamryn; Schroeder, Lianne; Clark, Ginevra A. – Journal of Chemical Education, 2020
Acid--base chemistry is an important and challenging topic for virtually all chemistry students. Recent works have focused on conceptually linking molecular and symbolic representations to experimental evidence for many chemical concepts. In this work we describe a laboratory exercise designed to address students' conceptual challenges regarding…
Descriptors: Chemistry, Laboratory Experiments, Premedical Students, Laboratory Procedures
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Verma, Abha; Goyal, Navneet – Journal of Chemical Education, 2020
A new two-step experiment has been designed and developed for the curriculum of the Organic Chemistry Laboratory 2 (CHEM2240L) sophomore course at Xavier University of Louisiana, in New Orleans. Initially, cyclohexanol was converted to cyclohexanone using bleach as the oxidizing agent followed by the formation of the cyclohexanone oxime. However,…
Descriptors: Science Experiments, Laboratory Experiments, College Science, Organic Chemistry
Gerard G. Dumancas; Noemi Carreto; Oliver Generalao; Guoyi Ke; Ghalib Bello; Arnold Lubguban; Roberto Malaluan – Journal of Chemical Education, 2023
Chemometric techniques such as partial least-squares (PLS) regression have been applied with huge success to a wide array of chemical problems including multicomponent analysis of analytes in complex mixtures. Despite this, there are few examples of laboratory pedagogical exercises that involve students in the acquisition of chemical data from…
Descriptors: Undergraduate Students, College Science, Chemistry, Science Laboratories
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Odunuga, Odutayo O.; Cheatwood, Nicholas Y.; Mullins, John A.; Nguyen, Samantha K.; Fry, Darrell R.; Harris, Michele R. – Journal of Chemical Education, 2021
This paper describes an undergraduate biochemistry laboratory module consisting of a set of experiments designed around a purification scheme for bovine serum albumin (BSA). Students purify BSA from cow plasma by a combination of salt and acetone precipitation, equilibrium dialysis, ion exchange, and size exclusion chromatography. Students use the…
Descriptors: Undergraduate Students, College Science, Science Instruction, Instructional Design
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McKee, James R.; Zanger, Murray; Chiariello, Carmine; McKee, James A.; Dorfner, Walter; Fasella, Elisabetta; Koo, Yumee – Journal of Chemical Education, 2019
The reduction of alkenes usually involves a hydrogen source and a catalyst. This process is both expensive and not well-suited for a large teaching laboratory. This paper presents an alternative procedure using a mixture of cobalt chloride and sodium borohydride to achieve the reduction of methyl oleate to methyl stearate. This procedure is safe,…
Descriptors: Laboratory Procedures, Science Instruction, Chemistry, Spectroscopy
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