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Simeen Sattar – Journal of Chemical Education, 2024
Lakes are artists' pigments made from colorants bound to an inert substrate, usually hydrated aluminum oxide. Before the late 19th century, lakes were made from natural pigments extracted from plants and insects, extracted either directly from the dyestuff or indirectly from waste materials generated in the manufacture of dyed textiles. The first…
Descriptors: Color, Science Experiments, Laboratory Experiments, Science Education
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Delgado, Teresa; Villard, Me´lanie – Journal of Chemical Education, 2022
Spin crossover (SCO) materials that switch between two different spin states, that is, the high spin (HS) and the low spin (LS) state, with very different optical, magnetic, and structural properties offer a unique platform to understand the consequences induced by the different electronic configurations of transition metal complexes. Due to the…
Descriptors: Inorganic Chemistry, Laboratory Training, Laboratory Experiments, Science Experiments
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Siyu Zhang; Yipin Zhu; Xiang Li; Shengjie Chen; Yu Chen; Hui He; Bo Peng; Yan Zhang – Journal of Chemical Education, 2023
A one-pot multicomponent synthesis of unsymmetrical indole-substituted methane derivative based on two consecutive reactions of p-methylbenzaldehyde with N-methylindole and 5,5-dimethyl-1,3-cyclohexanedione is described as an experiment that was carried out by second-year undergraduate chemistry students individually in a laboratory classroom. The…
Descriptors: Scientific Concepts, Organic Chemistry, Synthesis, Science Experiments
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Ng, Enoch Ming Wei; Song, Zhixiong; Yau, Chin Doong; Liew, Oi Wah; Ng, Tuck Wah – Journal of Chemical Education, 2021
The reaction between hydrochloric acid and calcium carbonate to produce carbon dioxide gas is a popular and engaging experiment to illustrate chemical reactions that result in the production of gases. It also provides a useful model for teaching concepts related to the effects of concentration on reaction rates. Although a prepared hydrochloric…
Descriptors: Science Experiments, Laboratory Experiments, Laboratory Safety, Chemistry
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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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Mona Christin Maaß; Alexander Tasch; Christian Jooss; Thomas Waitz – Journal of Chemical Education, 2022
Hydrogen is a sustainable and climate-friendly storage for renewable energies and can directly be generated from sunlight, e.g., by photocatalytic water splitting. This article presents the photocatalytic hydrogen evolution using LED irradiation of an aqueous ZnS particle dispersion with Na[subscript 2]S and Na[subscript 2]SO[subscript 3] as…
Descriptors: Chemistry, Scientific Concepts, Science Experiments, Hands on Science
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Mei Zhang; Wangmin Hu; Wenjing Liu; Chang Lei; Jun Guo; Hongcai Shang; Junling Hou – Journal of Chemical Education, 2022
Interdisciplinary experiments within chemistry are very important for the improvements in the overall quality of the education received by students. In this work, we describe an interdisciplinary experiment that was successfully completed by undergraduate students. This training integrates multiple disciplines including natural product medicinal…
Descriptors: Science Experiments, Laboratory Experiments, Chemistry, Spectroscopy
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Alexander Grushow – Journal of Chemical Education, 2022
A revised version of a traditional physical chemistry laboratory experiment has been developed to enhance student discussion in the laboratory and to improve students' connections between physical chemistry concepts and real molecular systems. In this experiment, students explore the keto-enol tautomerization of 2,4-pentanedione. However, unlike…
Descriptors: Chemistry, Science Experiments, Laboratory Experiments, Inquiry
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Bullis, Ryan; Coker, Joseph; Belding, Jacob; De Groodt, Adam; Mitchell, Dylan W.; Velazquez, Nancy; Bell, Ashtyn; Hall, Jaycee; Gunderson, William A.; Gunderson, Julie E. C. – Journal of Chemical Education, 2021
A fluorometer is a device that measures the spectroscopic properties of fluorescent materials, and fluorometry is used widely in chemistry research settings to characterize fluorescent samples. One of the obstacles faced by undergraduate programs looking to implement fluorometer-based experiments into their laboratory curriculum is the high cost…
Descriptors: Chemistry, Measurement Equipment, Laboratory Equipment, Spectroscopy
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Niu Huang; Chao Li; Shili Gan; Cancan Le; Huan Liu; Wei Liu; Liqun Ye – Journal of Chemical Education, 2022
With the benefits of low cost, energy efficiency, and environmental protection, photocatalytic hydrogen production is considered to be the most promising technology for the development of a clean and sustainable society. However, the utilization of photocatalytically generated hydrogen is not very common yet. Therefore, tertiary education urgently…
Descriptors: Undergraduate Students, College Science, Chemistry, Botany
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Astrof, Nathan S.; Horowitz, Gail – Journal of Chemical Education, 2018
A set of biochemistry experiments based on the technique of protein colorimetry is described. Students used the Biuret and Bradford assays to qualitatively and quantitatively assess solutions for protein. Two unique features of these experiments are (1) the use of intentional discrepancies within each experiment to promote critical thinking and…
Descriptors: Science Experiments, Biochemistry, Critical Thinking, Scientific Concepts
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Seery, Michael K.; Jones, Ariana B.; Kew, Will; Mein, Thomas – Journal of Chemical Education, 2019
Experimental design is a desirable outcome of laboratory education. Incorporating inquiry into the laboratory curriculum is attractive, but there are acknowledged concerns from practical, theoretical, and epistemological perspectives, and these are accentuated in upper-division courses. In this work, we draw on the extensive literature relating to…
Descriptors: Science Experiments, Research Design, Science Laboratories, Laboratory Training
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Kosenkov, Yana; Kosenkov, Dmitri – Journal of Chemical Education, 2021
A novel technology that employs computer vision (CV) to carry out an automatic titration experiment is presented. The experiment is designed to facilitate understanding of the basics of the CV technology and its application in chemistry among undergraduate students. The standard chemical procedure of titration has been chosen, since it is…
Descriptors: Undergraduate Students, Chemistry, Computer Uses in Education, Science Experiments
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Allen, Bradley – Physics Teacher, 2017
One challenge for the introductory physics teacher is incorporating calculus techniques into the laboratory setting. It can be difficult to strike a balance between presenting an experimental task for which calculus is essential and making the mathematics accessible to learners who may be apprehensive about applying it. One-dimensional kinematics…
Descriptors: Introductory Courses, Mechanics (Physics), Calculus, Kinetics
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DeFrancesco, Heather; Dudley, Joshua; Coca, Adiel – Journal of Chemical Education, 2018
An undergraduate experiment for the organic laboratory is described that utilizes microwave heating to prepare 5- substituted 1H-tetrazole derivatives through a (3 + 2) cycloaddition between aryl nitriles and sodium azide. The reaction mixture is analyzed by thin layer chromatography. The products are purified through an acid-base extraction and…
Descriptors: Undergraduate Students, Organic Chemistry, Science Experiments, Laboratory Experiments
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