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Showing 1 to 15 of 62 results Save | Export
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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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Thoms, L.-J.; Colicchia, G.; Girwidz, R. – Physics Teacher, 2021
Optical polarization phenomena are omnipresent in physics, chemistry, biology, and technology. Studying optical polarization is best done through an interdisciplinary approach that combines biology and technology, which usually makes things more interesting to students. Seeing Haidinger's brush for the first time can be an exciting discovery for…
Descriptors: Observation, Light, Optics, Handheld Devices
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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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Tao, Fujun; Garcia, Alma Valenzuela; Xiao, Ting; Zhang, Yuliang; Yin, Yansheng; Chen, Xiaobo – Journal of Chemical Education, 2020
Interfacial solar vapor generation has recently drawn much attention because of its high solar-to-vapor generation efficiency. Here we introduce the basic experimental procedures and analysis for undergraduates to perform such an experiment to catch up with the cutting-edge research wave. Interfacial solar vapor generation employs an interfacial…
Descriptors: Chemistry, College Science, Science Experiments, Science Materials
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Katselas, Anthony; Motion, Alice; O'Reilly, Chiara; Neto, Chiara – Journal of Chemical Education, 2019
An experiment which investigates the wettability of natural surfaces was developed for undergraduate students, which allows them to explore concepts of surface structure, wettability, superhydrophobic surfaces, and self-cleaning. The students choose their own samples of leaves and flowers present in their local environment, examine their surface…
Descriptors: Undergraduate Students, Chemistry, Hands on Science, Science Activities
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Roupioz, Yoann – Journal of Chemical Education, 2019
A simple bioassay was designed for the detection of adenosine, a human metabolite involved in several physiological processes, on the basis of the functionalization of gold nanoparticles with DNA oligonucleotides selectively binding adenosine. The test was possible thanks to the selective and sensitive binding of adenosine by two DNA…
Descriptors: College Science, Science Instruction, Science Experiments, Metabolism
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Holt, P. J.; Poblocki, M. – Physics Education, 2017
We provide a design for a low cost orientable search coil that can be used to investigate the variation of magnetic flux with angle. This experiment is one of the required practical activities in the current A level physics specification for the AQA examination board in the UK. We demonstrate its performance and suggest other suitable…
Descriptors: Foreign Countries, Physics, Science Instruction, Scientific Concepts
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Nahra, Fady; Riant, Olivier – Journal of Chemical Education, 2015
A modified total synthesis of (S)-goniothalamin is described for an advanced course in organic chemistry. This experiment gives students an opportunity to handle organometallic reagents and perform an enzymatic kinetic resolution and a metathesis reaction, all in the same synthesis. Furthermore, students learn flame-drying techniques for the…
Descriptors: Cancer, Synthesis, Organic Chemistry, Science Experiments
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Brown, Patrick L.; Concannon, James; Hansert, Bernhard; Frederick, Ron; Frerichs, Glen – Science Activities: Classroom Projects and Curriculum Ideas, 2015
Why does a balloon deflate when it is left in a cold car; or why does one have to pump up his or her bike tires in the spring after leaving them in the garage all winter? To answer these questions, students must understand the relationships among temperature, pressure, and volume of a gas. The purpose of the Predict, Share, Observe, and Explain…
Descriptors: Investigations, Student Research, Climate, Physics
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Cunningham, W. Patrick; Joseph, Christopher; Morey, Samantha; Santos Romo, Ana; Shope, Cullen; Strang, Jonathan; Yang, Kevin – Journal of Chemical Education, 2015
A simplified activity examined gas density while employing cost-efficient syringes in place of traditional glass bulbs. The exercise measured the density of methane, with very good accuracy and precision, in both first-year high school and AP chemistry settings. The participating students were tasked with finding the density of a gas. The…
Descriptors: Introductory Courses, High School Students, Secondary School Science, Cost Effectiveness
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Lau, Kwok-chi – American Biology Teacher, 2013
This article presents a tangible model used to help students tackle some misconceptions about enzyme actions, particularly the induced-fit model, enzyme-substrate complementarity, and enzyme inhibition. The model can simulate how substrates induce a change in the shape of the active site and the role of attraction force during enzyme-substrate…
Descriptors: Models, Biochemistry, Misconceptions, Scientific Methodology
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Hudson, Reuben; Glaisher, Samuel; Bishop, Alexandra; Katz, Jeffrey L. – Journal of Chemical Education, 2015
A multiple day activity for students to create large-scale plastic objects from the biopolymer chitin (major component of lobster, crab, and shrimp shells) is described. The plastic objects created are durable and made from benign materials, making them suitable for students to take home to play with. Since the student-created plastic objects are…
Descriptors: Science Activities, Biotechnology, Science Materials, Introductory Courses
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Peters, Brenda J.; Blair, Amy C. – American Biology Teacher, 2013
Many biology educators at the undergraduate level are revamping their laboratory curricula to incorporate inquiry-based research experiences so that students can directly participate in the process of science and improve their scientific reasoning skills. Slugs are an ideal organism for use in such a student-directed, hypothesis-driven experience.…
Descriptors: Biology, Laboratory Experiments, Laboratory Procedures, Active Learning
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Downs, Nathan; Larsen, Kim; Parisi, Alfio; Schouten, Peter; Brennan, Chris – Teaching Science, 2012
A practical exercise for developing a simple cost-effective solar ultraviolet radiation dosimeter is presented for use by middle school science students. Specifically, this exercise investigates a series of experiments utilising the historical blue print reaction, combining ammonium iron citrate and potassium hexacyanoferrate to develop an…
Descriptors: Chemistry, Foreign Countries, Science Curriculum, Investigations
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Gottlieb, Herbert H., Ed. – Physics Teacher, 1980
This section presents new ideas with regard to apparatus for teaching physics. The following four ideas are presented: (1) measuring speed of light (2) a poor man's barometer, (3) center of mass of a rotating object, and (4) minimizing glass breakage. (HM)
Descriptors: Laboratory Procedures, Physics, Science Equipment, Science Experiments
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