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Showing 1 to 15 of 412 results Save | Export
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Chukwuneke, Chikaodili E.; Madu, Joshua O.; Agboola, Bolade O. – Journal of Chemical Education, 2021
Trace metals when present in crude oil or fuels are of economic significance in refining and to the combustion engines that use them. Herein, we develop a laboratory activity that trains students on how to analyze crude oil samples for ash and trace metal content while giving them the opportunity to acquire skills needed as a quality control…
Descriptors: Science Instruction, Chemistry, College Science, Undergraduate Study
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Fuster, Gonzalo; Rojas, Roberto – Physics Teacher, 2021
The photoelectric effect consists of electrons emerging from the region near the inner surface of a metallic solid toward the outside vacuum, when the metal surface is illuminated. The effect depends on the frequency of the light waves and the properties of the metal surface. In particular, a minimum or "threshold" frequency of light is…
Descriptors: Physics, Science Instruction, Energy, Metallurgy
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Cole, Martin H.; Fuller, Dana K.; Sanger, Michael J. – Chemistry Education Research and Practice, 2021
This study compares students' explanations of the oxidation-reduction reaction between silver nitrate and copper metal after viewing a chemical demonstration and one of four different particulate-level computer animations. The animations differed in the way the ionic charges were depicted (shown or omitted) and the way the transferred electrons…
Descriptors: Chemistry, Scientific Concepts, Knowledge Level, Metallurgy
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Balasundram, Nilavathi; Karpudewan, Mageswary – Chemistry Education Research and Practice, 2021
A study of transition metals includes studying the physical and chemical properties of first-row d block metals in the Periodic Table. The curriculum on transition metals emphasizes learning the physical and chemical properties and is a lecture-based strategy that is predominately employed by teachers to transfer the knowledge on properties of the…
Descriptors: Content Area Writing, Learning Activities, Educational Technology, Brainstorming
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Chandler, Morgan; Shevchenko, Oleg; Vivero-Escoto, Juan L.; Striplin, Caryn D.; Afonin, Kirill A. – Journal of Chemical Education, 2020
Communicating the flow of genetic information (DNA ? RNA ? protein) is not only a basis of biochemical education, but also is the essential foundation for understanding the complexity of biological processes. The described laboratory exercise demonstrates that the information encoded into different DNA sequences can be transformed into various…
Descriptors: Science Instruction, Biochemistry, Science Laboratories, Hands on Science
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Herman, Frederik; Priem, Karin – History of Education, 2020
This paper looks at a specific set of corporate images, namely photographs of apprentices of the Luxembourg steel conglomerate ARBED, and analyses how young workers are depicted in these images. The paper draws on a collection of 2251 glass-plate negatives (re)presenting ARBED's industrial cosmos, including its vocational school the Institut Emile…
Descriptors: Foreign Countries, Vocational Education, Educational History, Apprenticeships
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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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Ling, Yizhou; Yu, Zhizhen; Chen, Pengwen; Yan, Xiaohong; Yang, Jian – Journal of Chemical Education, 2020
This paper introduces a safe, interesting, convenient, and low-cost experiment. The products of galvanic cells and electrolytic cells are compressed into specimens that are placed on a slide to stretch the metal dendrites in one plane and ensure they are not easily destroyed by external factors. The details and growth process of the metal…
Descriptors: Metallurgy, Science Experiments, Cytology, Chemistry
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Jung, Jiyoung; Dinescu, Adriana; Kukrek, Ahmet – Journal of Chemical Education, 2020
Recently, researchers have paid extensive attention to colorimetric/fluorimetric probe development and its applications in biological and industrial samples. The actual development of such probe molecules, however, often requires an iterative process to achieve certain goals such as selectivity and sensitivity toward a target analyte. In spite of…
Descriptors: College Science, Science Instruction, Chemistry, Kinetics
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Lisensky, George; McFarland-Porter, Ross; Paquin, Weltha; Liu, Kangying – Journal of Chemical Education, 2020
Nanoparticle Zn[subscript 2x] Cu[subscript 1-x] In[subscript 1-x] S[subscript 2] is a promising and safer alternative to lead- and cadmium-containing quantum dots. Students prepare Zn[subscript 0.44] Cu[subscript 0.78] In[subscript 0.78] S[subscript 2] quantum dots in a one-pot synthesis without an inert atmosphere and investigate how the color,…
Descriptors: Science Instruction, Chemistry, Metallurgy, Molecular Structure
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Armesto, Antia Gómez; Muñoz, Juan Carlos Nóvoa; Estévez, Manuel Arias; Delgado, Avelino Núñez; Rodríguez, Esperanza Álvarez; Sanjurjo, Maria José Fernández – Journal of Chemical Education, 2020
A laboratory experiment to study the effect of soil amendments in the bioremediation of polluted soils is described. Students extracted and measured 0.01 M CaCl[subscript 2]-soluble Cd, EDTA-soluble Cd, and DTPA-soluble Cd concentrations in contaminated soils, treated with a liming material (mussel shell), and/or with an organic amendment (pine…
Descriptors: Pollution, Soil Science, Metallurgy, Laboratory Experiments
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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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Zhu, Lin; Gharib, Mustafa; Becker, Charline; Zeng, Yuan; Ziefuß, Anna R.; Chen, Lizhen; Alkilany, Alaaldin M.; Rehbock, Christoph; Barcikowski, Stephan; Parak, Wolfgang J.; Chakraborty, Indranath – Journal of Chemical Education, 2020
A laboratory class was developed and evaluated to illustrate the synthesis of metal nanoclusters (NCs) and to explain their photoluminescence properties for the case of silver. The described experiment employs a synthetic protocol that consists of two sequential phases in a single reaction pot: the reduction of silver ions into plasmonic silver…
Descriptors: College Science, Chemistry, Science Laboratories, Laboratory Experiments
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Pillay, Letitia – Journal of Chemical Education, 2020
Inductively coupled plasma optical emission spectroscopy (ICP-OES) is one of the most commonly used analytical techniques for the measurement of metals in environmental matrices. However, one of the drawbacks of ICP-OES is interference, viz., spectral and nonspectral (due to transport effects) interference. In this simple laboratory experiment,…
Descriptors: Science Experiments, Spectroscopy, Chemistry, Laboratory Experiments
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