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Kodani, Satoki; Fukuda, Masahiro; Tsuboi, Yoji; Koga, Nobuyoshi – Journal of Chemical Education, 2020
This study focuses on designing a laboratory learning program for a high school chemistry course in which students could discover the fundamental principles of Hess's law via stepwise inquiry. By exploring the chemical properties of common desiccants, mainly those that were reactive in water, students were introduced to the exothermic reaction of…
Descriptors: Secondary School Science, Chemistry, Science Laboratories, Scientific Principles
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Dauzvardis, Fabian; Knapp, Alexander; Shein, Kaung Nan Dar; Lisensky, George – Journal of Chemical Education, 2020
In this brief experiment, students create a superhydrophobic surface as an application of polar--nonpolar interactions and redox chemistry. Half of a zincgalvanized steel strip is coated in copper nanoparticles through electroless deposition. A layer of nonpolar octadecanethiol is added to half of that copper surface. Students classify the three…
Descriptors: Science Instruction, Science Experiments, Chemistry, Undergraduate Study
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Lai, Heyun; Li, Ziqi; Zhu, Shunying; Cai, Longfei; Xu, Chunxiu; Zhou, Qing – Journal of Chemical Education, 2020
This communication describes a method to detect aluminum in gastric drugs by the naked eye using a microfluidic paper-based analytical device ([mu]PAD). Aluminum ions react with chrome azurol S (CAS) and cetyltrimethylammonium bromide (CTAB) to form a colored complex, which generates a colored band on the [mu]PAD. A printed ruler can be used to…
Descriptors: Chemistry, Hands on Science, Identification, Metallurgy
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Lam, Chun Ho; Jackson, James E. – Journal of Chemical Education, 2020
Electrocatalytic hydrogenation of acetol (IUPAC: 1-hydroxy-2-propanone), a species formed upon thermal liquefaction of biomass, can be achieved using inexpensive objects: filter paper, coins, batteries, salts, and water. This simple example demonstrates that "green" chemical transformations can be achieved with familiar items and helps…
Descriptors: Chemistry, Science Instruction, Science Materials, Secondary School Science
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Stepek, Iain A.; Hofmann, Raphael; Nichols, Paula L.; Aschwanden, Andrea; Eckard, Christophe; Aschwanden, Patrick; Bode, Jeffrey W. – Journal of Chemical Education, 2020
Despite the importance of organic chemistry to human health and quality of life, very few outreach programs have been successful in communicating this message. This contributes to negative public perceptions of organic chemistry and obscures the enormous advances in quality of life engendered by organic synthesis. New chemical outreach programs…
Descriptors: Organic Chemistry, Science Instruction, Secondary School Science, High School Students
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Azman, Adam M. – Journal of Chemical Education, 2020
Fast, reliable, well-resolved latent fingerprints can be planted by applying a thin coating of a 50:50 mixture of hand lotion and food-grade protein powder. Fingerprints can be revealed with iodine fuming or ninhydrin staining. This low-cost alternative to commercial latent print pads can be used in a variety of classroom or public settings where…
Descriptors: Chemistry, Science Instruction, Crime, Laboratory Experiments
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Hike, Nina; Hughes-Phelan, Sara J. – Journal of Chemical Education, 2020
To be literate in modern society no longer means that one can simply read and write. In our rapidly changing world where information is available with a few taps of our fingers, critical thinking and process-oriented learning have become an essential part of being literate. Therefore, when many of the states decided to create a unifying set of…
Descriptors: Science Instruction, High School Students, Secondary School Science, Writing (Composition)
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Ling, Yizhou; Chen, Pengwen; Li, Juan; Zhang, Junyao; Chen, Kai – Journal of Chemical Education, 2020
This paper proposes an experiment in which students build microdevices for conveniently electrolyzing water and use image recognition and processing technology to measure the volume of gas generated during the reaction in a noncontact way. Taking advantage of three ratio relationships between (i) gas volume and the area of bubbles, (ii) the…
Descriptors: Science Instruction, Chemistry, Science Experiments, High School Students
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Garrido, Neil; Pitto-Barry, Anaïs; Soldevila-Barreda, Joan J.; Lupan, Alexandru; Comerford Boyes, Louise; Martin, William H. C.; Barry, Nicolas P. E. – Journal of Chemical Education, 2020
The abstract nature of physical chemistry and spectroscopy makes the subject difficult to comprehend for many students. However, bridging arts and science has the potential to provide innovative learning methods and to facilitate the understanding of abstract concepts. Herein, we present a high-school project based on the conversion of selected…
Descriptors: Chemistry, Spectroscopy, Science Instruction, Acoustics
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Wang, Xisen; Chrzanowski, Matthew; Liu, Yujuan – Journal of Chemical Education, 2020
A safe, convenient, and environmentally benign laboratory experiment for the synthesis of biodiesel from six kinds of vegetable oils has been developed for the introductory organic chemistry laboratory. The experiment uses ultrasonic irradiation in the presence of a base catalyst at room temperature and atmospheric pressure. Because of safer and…
Descriptors: Organic Chemistry, Science Instruction, College Science, Undergraduate Study
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Smellie, Iain A.; Abdelhamid, Yusra; Carpenter-Warren, Cameron L.; Cordes, David B.; Elliott, Clement; Lamorte, Sarah; Patterson, Iain L. J.; Sanders, William; Sandison, Iain P.; Slawin, Alexandra M. Z.; Stewart, Dominic M.; Walters, Samuel N. – Journal of Chemical Education, 2020
A laboratory activity is described for senior high school or first year undergraduate level students that illustrates key concepts linked to extractive metallurgy. This experiment demonstrates preferential binding of a methoxyphenolic oxime ligand to Cu[superscript 2+] in the presence of other transition metal ions in aqueous solution. The…
Descriptors: Science Instruction, Science Experiments, Metallurgy, College Science
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Babincáková, Mária – Journal of Chemical Education, 2020
Knowing the volume of evolved gases is helpful to select an optimal leavening agent for a particular application. The comparison of leavening agents, their reactions through the baking process in the modern and attractive way, is presented here. A gas pressure sensor probe was used to monitor the pressure change due to the carbon dioxide produced…
Descriptors: Science Instruction, Chemistry, Scientific Concepts, High School Students
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Kmentová, Iveta; Almássy, Ambroz; Feriancová, Lucia; Putala, Martin – Journal of Chemical Education, 2020
We present an experiment which was designed to assess the separation technique skills of the gifted high school students who attended the 50th International Chemistry Olympiad 2018. The procedure consists of two synthetic tasks and is also applicable for teaching undergraduates. The haloform reaction of 2-acetonaphthone with sodium hypochlorite in…
Descriptors: Science Instruction, Science Experiments, College Science, Undergraduate Study
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Bernard, Pawel; Mendez, James D. – Journal of Chemical Education, 2020
3D printing and simple electronics were used to create a polarimeter suitable for a variety of chemistry courses. This device allows instructors to demonstrate optical activity but is also easy to use and low cost enough to be widely available for student use, as well. The instrument uses an LED light source and detector housed in a 3D-printed…
Descriptors: Science Instruction, Secondary School Science, High Schools, Chemistry
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Ramesh, Vinay Bapu; Selvam, Athavan Alias Anand; Kulkarni, Surabhi; Manganahalli, Anusha Dattatreya; Bettadapur, Kiran R. – Journal of Chemical Education, 2020
High school students find reaction stoichiometry and the concept of the mole hard to comprehend. Teachers are well aware of the importance of teaching the mole concept and also the difficulty associated with it. In an attempt to improve the understanding of the mole concept with reduced difficulty, an atomic model kit that provides a hands-on…
Descriptors: Stoichiometry, Chemistry, Secondary School Science, High School Students
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