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Showing 1 to 15 of 3,029 results Save | Export
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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
Hilary Onbey; Kaitlin Stringfellow; Rajeev B. Dabke; Zewdu Gebeyehu; Samuel Melaku – Journal of Chemical Education, 2023
The use of a multicompartment electrochemical cell for the potentiometric determination of solubility product constants of aqueous I[superscript -], Br[superscript -], SCN[superscript -], and Cl[superscript -] salts of silver is presented. An electrochemical cell presented in this study contained multiple half-cells made of disposable drinking…
Descriptors: Undergraduate Study, College Science, Chemistry, Laboratory Experiments
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Francis Bru; Sofie M. P. Vanden Broeck; Gianmarco Pisano`; Klaartje De Buysser; Catherine S. J. Cazin – Journal of Chemical Education, 2023
The implementation of a laboratory exercise in an undergraduate chemistry course, where students perform a comparison of three different synthetic methods toward [Cu(Cl)(IPr)]-complexes (IPr = N,N'-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), is described. The students are introduced to the continuous improvement of reactions in terms of green…
Descriptors: Undergraduate Study, College Science, Chemistry, Conservation (Environment)
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María Evangelina Carezzano; María de las Mercedes Oliva; Emiliano Foresto; Pablo Bogino; Walter Giordano – Journal of Biological Education, 2024
Plant extracts and their components have been reported to have antimicrobial properties against phytopathogens. Although such properties could be harnessed for the development of new pathogen control strategies, there are no standardised methods for their assessment in different extracts. The laboratory exercise presented here involves the use of…
Descriptors: Laboratory Experiments, Science Education, Microbiology, Plants (Botany)
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Lei Li; Fu Pi; Gu Zhan; Qian-Qian Yang; Ying-Chun Chen; Zhi-Chao Chen; Wei Du – Journal of Chemical Education, 2024
An organic chemistry experiment designed for senior undergraduates focuses on bifunctional catalysis, a critical yet often omitted topic at the undergraduate level, but essential for advanced studies in chemistry. By utilization of a tertiary amine-thiourea catalyst in the asymmetric Michael addition reaction, the experiment showcases the…
Descriptors: Undergraduate Students, College Science, Organic Chemistry, Laboratory Experiments
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Haibo Zhang; Qiong Ding; Ruohan Li; Weihong Chen; Peng Wang – Journal of Chemical Education, 2024
Liquid metals are widely applied in various fields, including chemistry, catalysis, energy storage, chemical sensing, and stretchable electronics, due to their unique deformabilities. However, their behavior under a rod or ring electrode has never been analyzed. Furthermore, research on the deformation behavior of eutectic Ga--In (EGaIn), the most…
Descriptors: Metallurgy, Scientific Concepts, Science Experiments, Chemistry
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Roan Fraser; Tjalling R. Canrinus; Iwan Merkelijn; Christian P. Imboden; Niek N. H. M. Eisink – Journal of Chemical Education, 2024
A renewed experimental procedure for the unknown carbonyl experiment has been developed using hydrazone synthesis, thin layer chromatography (TLC) analysis, and melting point determination to differentiate between structurally similar ketones and aldehydes in undergraduate organic chemistry practical courses. Benzaldehyde, p-tolualdehyde,…
Descriptors: Science Experiments, Laboratory Experiments, Organic Chemistry, College Science
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Ernesto Lucatero; Robabeh Bashiri; Monica C. So – Journal of Chemical Education, 2024
Herein, we present an integrated upper division chemistry laboratory experiment involving the synthesis, characterization, and evaluation of catalytic metal--organic frameworks (MOFs). Experiments are designed to facilitate the solvothermal synthesis and characterize MOFs, including UiO-66, UiO-66-NH[subscript 2], and UiO-66-NO[subscript 2]. The…
Descriptors: Organic Chemistry, Scientific Concepts, College Science, Undergraduate Students
Mauna S. Kareti; William J. Howitz – Journal of Chemical Education, 2023
Normal phase thin layer chromatography is a widely taught technique in undergraduate organic chemistry laboratory courses. To understand how the technique works, students must have a strong conceptual understanding of polarity and intermolecular forces. Unfortunately, many students have misconceptions regarding how polarity and intermolecular…
Descriptors: College Science, Organic Chemistry, Scientific Concepts, Misconceptions
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Leonardo Antonelli; Rosiene Reis Mattos; Mauricio Moraes Victor; Silvio Cunha – Journal of Chemical Education, 2024
A multicomponent reaction was adapted and successfully applied in the major organic course, which involves synthesizing and characterizing a 1,3-benzoxazine derived from paracetamol extracted from tablets of the worldwide well-known medicine Tylenol. Using paracetamol as a reagent is a motivational strategy in undergraduate laboratories to meet…
Descriptors: Organic Chemistry, Medicine, Undergraduate Study, College Science
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Alexandros G. Sotiropoulos; Javier Sánchez-Martín; Victoria Widrig; Jonatan Isaksson; Zoe Bernasconi; Teresa Koller; Giulia Bearth; Gerhard Herren; Thomas Wicker; Beat Keller – Journal of Biological Education, 2024
Wheat powdery mildew is an important fungal pathogen of wheat with an obligatory biotrophic lifestyle (a parasite that can only develop on a living host). We investigated the genetics of this host-pathogen interaction by using phenotyping and PCR assays to detect genes in both wheat and powdery mildew, which are known determinants of the outcome…
Descriptors: Foreign Countries, College Science, Undergraduate Students, Biology
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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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Si-Ke Chen; Xiao-Jie Ju; Jie Wei; Wei Wang; Liang-Yin Chu – Journal of Chemical Education, 2023
Previous educational articles on microfluidic technology mainly focused on continuous microfluidics, so we set up an undergraduate laboratory experiment to introduce droplet microfluidics to students. Students can understand the concept of microfluidic channels and the principles of droplet microfluidics, prepare polydimethylsiloxane (PDMS)…
Descriptors: Chemistry, Scientific Concepts, Science Experiments, Science Materials
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Adrian R. Hilts; Jason Cooke – Journal of Chemical Education, 2023
The addition of a small excess of triethyl orthoformate to an alcoholic mixture of NiCl[subscript 2]·6H[subscript 2]O and triphenylphosphine (PPh[subscript 3]) results in an increase in the typical isolated yield of [NiCl[subscript 2](PPh[subscript 3])[subscript 2]] from below 50% to over 85%. The impact of water when present in the reaction…
Descriptors: College Science, Chemistry, Undergraduate Study, Scientific Concepts
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Maurizio Costabile; Bradley Simpson; Jasmina Turkanovic; Bernard P. Hughes – Biochemistry and Molecular Biology Education, 2024
This article details the outcome of a joint reflective approach undertaken by the authors to identify common difficulties experienced by 2nd-year undergraduate Biochemistry students in laboratory classes. Difficulties experienced in laboratories can affect the development of hand skills, an understanding of how to correctly operate laboratory…
Descriptors: Biochemistry, Science Laboratories, Instructional Effectiveness, Undergraduate Study
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