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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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Pieter T. L. Beck; Ruby Cornand; Wannes De Turck; Mieke Adriaens – Science & Education, 2025
In this article, we discuss the replication of a forgotten chemical instrument in the context of undergraduate chemistry education. Together with students, we have attempted to replicate an eighteenth century "eudiometrical" procedure. Eudiometry was the practice of measuring the "goodness" of the air by looking at the volume…
Descriptors: Undergraduate Students, College Science, Science Education, Chemistry
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Schmitt, Franz-Josef; Schröder, Christian; Campbell, Züleyha Yenice; Moldenhauer, Marcus; Friedrich, Thomas – Athens Journal of Education, 2018
Research-based learning motivates students to identify with different subjects. The orientation program MINTgrün at Technische Universität Berlin offers two study semesters for open choices of teaching modules, including a series of specially designed laboratories covering topics like robotics, construction, environmental research, programming,…
Descriptors: Foreign Countries, College Students, Student Centered Learning, Blended Learning
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Wilkins, Andrew; Parmenter, Emily – School Science Review, 2012
A diffusion cell to model the permeation of salicylate drugs through the skin using low-cost materials and a sensitive colorimetric analytical technique is described. The diffusion apparatus has been used at a further education college by a student for her AS-level Extended Project to investigate the permeation rates of salicylic acid…
Descriptors: Investigations, Science Experiments, Science Instruction, Laboratory Procedures
Cooper, Kenneth J. – Diverse: Issues in Higher Education, 2012
A reality show about a college course--a chemistry class no less? That's what "ChemLab Boot Camp" is. The 14-part series of short videos is being released one episode at a time on the online learning site of the Massachusetts Institute of Technology. The novel show follows a diverse group of 14 freshmen as they struggle to master the…
Descriptors: Chemistry, Electronic Learning, Online Courses, Video Technology
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Corotto, Frank; Ceballos, Darrel; Lee, Adam; Vinson, Lindsey – American Biology Teacher, 2010
Students commonly test the effects of chemical agents on the heart rate of the crustacean "Daphnia" magna, but the procedure has never been optimized. We determined the effects of three concentrations of ethanol, nicotine, and caffeine and of a control solution on heart rate in "Daphnia." Ethanol at 5% and 10% (v/v) reduced mean heart rate to…
Descriptors: Control Groups, Metabolism, Science Instruction, Science Education
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Brody, Jed; Rohald, Kate; Sutton, Atasha – Journal of Chemical Education, 2010
We consider a volume of air trapped over a glycerol column in a eudiometer. We demonstrate that there is an approximately linear relationship between the volume of trapped air and the height of the glycerol column. Simply by moving the eudiometer up and down, we cause the glycerol-column height and trapped-air volume to vary. The plot of volume…
Descriptors: Laboratory Procedures, Science Experiments, Mathematical Concepts, Physics
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Basey, John; Sacket, Loren; Robinson, Natalie – International Journal for the Scholarship of Teaching and Learning, 2008
Variations in science lab design can differentially impact student learning. Quantification of these differential impacts can be used in modeling--an approach we term "optimal lab design." In this study we estimated relative influences of six characteristics of lab design on students' attitudes toward science labs in three different…
Descriptors: Science Laboratories, Design, Student Attitudes, College Freshmen
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van den Berg, Annemieke W. C.; Hanefeld, Ulf – Journal of Chemical Education, 2006
A set of highly atom-economic experiments was developed to highlight the differences between acid- and base-catalyzed ester syntheses and to introduce the principles of atom economy. The hydrochloric acid-catalyzed formation of an ester was compared with the 4-dimethylaminopyradine-catalyzed ester synthesis.
Descriptors: Laboratory Procedures, Synthesis, Chemistry, Scientific Principles
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Peihong Liang; Adhyaru, Bhavin; Pearson, Wright L.; Williams, Kathryn R. – Journal of Chemical Education, 2006
The experiment used [to the third power]H-labeled estradiol to determine the binding constant of estradiol to bovine serum albumin. Estradiol must complex with serum proteins for the transport in the blood stream because of its low solubility in aqueous systems and estradiol-protein binding constant, where K[subscript B] is important to understand…
Descriptors: Chemistry, Physiology, Biochemistry, Laboratory Procedures
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Gomes, M. Teresa S. R.; Oliveira, M. Manuela O.; Fonseca, M. Arminda; Oliveira, Joao A. B. P. – Journal of Chemical Education, 2004
Examination of the Faraday constant is conducted using a speedy electrolysis experiment. This cost-effective, easy and fast procedure makes it highly suitable for classroom applications.
Descriptors: Science Experiments, Chemistry, Laboratory Procedures, Evaluation Methods
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Brenneman, James A. – American Biology Teacher, 1979
The growth and study of lower fungi, especially Oomycetes and Zygomycetes, in the biology classroom are described. (BB)
Descriptors: Biology, Botany, Higher Education, Laboratory Procedures
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Gilbert, George L., Ed. – Journal of Chemical Education, 1978
Two demonstrations are described which are suitable for introductory chemistry classes. The first involves the precipitation of silver, and the second is a demonstration of the relationship between rate constants and equilibrium constants using water and beakers. (BB)
Descriptors: Chemistry, Demonstrations (Educational), Higher Education, Laboratory Procedures
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Boyer, Richard; And Others – Journal of Chemical Education, 1985
Describes experiments in which students determine the ground state ionization constant (GSIC) by analyzing the absorption spectra of 2-naphthol in acidic, basic, and buffered solutions. Information on the ground and excited state ionization constants and on the kinetics of the excited state deprotonation-protonation reaction is included. (JN)
Descriptors: Chemistry, College Science, Higher Education, Laboratory Procedures
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Hill, Zachary D.; Macarthy, Patrick – Journal of Chemical Education, 1986
Job's method of continuous variations is a commonly used procedure for determining the composition of complexes in solution. Presents: (1) a review of the method; (2) theory of a new procedure for measuring Job's plots; and (3) an undergraduate experiment using the new method. (JN)
Descriptors: Chemistry, College Science, Higher Education, Laboratory Procedures
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