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Hermanns, Jolanda; Schmidt, Bernd – Journal of Chemical Education, 2019
Stepped supporting tools were developed and used in the university seminar Organic Chemistry taken by nonmajor chemistry students, which supported self-regulated learning. These supporting tools were also used for accompanying homework, which included a QR code that led to additional supporting tools. The application of stepped supporting tools in…
Descriptors: Organic Chemistry, Science Instruction, College Science, Self Control
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Manae, Meghna A.; Hazra, Anirban – Journal of Chemical Education, 2019
There exist several two- and three-dimensional graphical representations of hydrogen-like orbitals. Despite this, connecting the mathematical form of the atomic orbital, a function of both radial and angular variables, to its actual shape is often challenging for students. Here, we present a new graphical representation using bubble plots to show…
Descriptors: Visual Aids, Science Instruction, Scientific Concepts, College Students
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Smith, Catherine J.; Mansfield, Steven J.; Anderson, Edward A.; Burton, Jonathan W. – Journal of Chemical Education, 2019
Organic synthesis in a modern research laboratory uses state-of-the-art equipment to provide inert atmospheres, track reaction progress, and facilitate the purification of intermediates. Such facilities are not available in a high school laboratory. In this paper, synthetic organic chemistry is taken back to basics: A four step total synthesis of…
Descriptors: Science Instruction, Laboratory Experiments, Universities, Foreign Countries
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Pemberton, Andrew T.; Magers, D. Brandon; King, Daniel A. – Journal of Chemical Education, 2019
Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and computational chemistry are used in concert to evaluate the thermal decomposition of calcium acetate monohydrate, Ca(C[subscript 2]H[subscript 3]O[subscript 2])[subscript 2]·H[subscript 2]O, and to engage students in high-level thinking as they synthesize results…
Descriptors: Spectroscopy, Science Instruction, Thinking Skills, Chemistry
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Nagel, Thomas; Mentzer, Casey; Kivistik, P. Mike – Journal of Chemical Education, 2019
This experiment provides students with a thorough understanding of electrolysis and the parameters that most greatly impact optimization of this process. In this laboratory exercise, students will focus on the anodization of bismuth metal to develop thin oxide films. When designing an electrolytic cell devoted to anodization, there are several…
Descriptors: Cytology, Science Instruction, Laboratory Experiments, Teaching Methods
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Noei, Nima; Imani, Iman Mohammadi; Wilson, Lee D.; Azizian, Saeid – Journal of Chemical Education, 2019
A low-cost and simple setup to measure the densities of liquids is introduced herein. The results and reliability of this setup were evaluated for pure liquids, water-ethanol binary mixtures, and aqueous NaCl solutions. The constructed densitometer provided density values with acceptable relative errors (less than ±3.0%), which were compared to…
Descriptors: Chemistry, Science Education, Science Instruction, Laboratory Experiments
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Barrera, Luis A.; Alma C. Escobosa; Alsaihati, Laila S.; Noveron, Juan C. – Journal of Chemical Education, 2019
Herein we present a modified iodine clock experiment which replaces starch with cellulose paper. This provides the reaction with a white solid surface in which color change can be clearly observed and reduces reagent amounts required to 540 µL per group. After data acquisition, students are required to calculate reaction orders and the reaction…
Descriptors: Science Experiments, Chemistry, Kinetics, Science Laboratories
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Wilson, Sarah Beth; Varma-Nelson, Pratibha – Journal of Chemical Education, 2019
The purpose of this parallel convergent mixed methods study was to characterize organic chemistry students' expression of electron-pushing formalism skills who had participated in peer-led team learning (PLTL) and cyber peer-led team learning (cPLTL), a synchronous online version of peer-led team learning (PLTL) workshops. A new electron-pushing…
Descriptors: Science Instruction, Organic Chemistry, College Science, Undergraduate Study
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Cohen, Richard; Kelly, Angela M. – Journal of Chemical Education, 2019
Community colleges educate nearly half of all students who complete postsecondary degrees in science, technology, engineering, and mathematics (STEM) disciplines. For many matriculated students, chemistry is a required gatekeeping course for postsecondary retention and advancement in STEM majors. This research explored community college student…
Descriptors: Community Colleges, Two Year College Students, Course Selection (Students), STEM Education
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Schoeddert, Alex; Babooram, Keshwaree; Pelletier, Sarah – Journal of Chemical Education, 2019
A low-cost and easy-to-use water recirculation system for a condenser apparatus was designed and installed in an organic chemistry teaching laboratory. Relying on gravity and a small pump for water circulation, it supplies four stations simultaneously. The water recirculation system works very well with condensers used for distillation and reflux…
Descriptors: Organic Chemistry, Water, Sanitation, Science Laboratories
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Bannin, Timothy J.; Datta, Partha P.; Kiesewetter, Elizabeth T.; Kiesewetter, Matthew K. – Journal of Chemical Education, 2019
In this experiment, students are asked to conduct a catalytic cross-metathesis experiment and compare this reaction to the Wittig reaction within the confines of green chemistry. Students synthesize stilbene from styrene using Grubbs second-generation catalyst. Products can be minimally characterized by IR spectroscopy and melting point, but using…
Descriptors: Science Instruction, Chemistry, Science Experiments, College Science
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Kean, Kelsey M.; van Zee, Kari; Mehl, Ryan A. – Journal of Chemical Education, 2019
The content and design scheme for a readily adaptable, research-based laboratory course in chemical biology are presented. In this course, students interrogate protein structure and function using the site-specific incorporation of noncanonical amino acids by genetic code expansion. The relatively new field of genetic code expansion enables…
Descriptors: Science Instruction, Biochemistry, Science Laboratories, Genetics
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Fedick, Patrick W.; Schrader, Robert L.; Ayrton, Stephen T.; Pulliam, Christopher J.; Cooks, R. Graham – Journal of Chemical Education, 2019
Process analytical technologies (PATs) are used in the pharmaceutical and other industries to monitor chemical processes in real-time with analytical instrumentation. Each PAT analyzer brings its own advantages and disadvantages to the process, and multiplexing PAT analyzers can be advantageous as they can provide confirmatory measurements and…
Descriptors: Science Education, Spectroscopy, Laboratory Equipment, Science Laboratories
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Limpanuparb, Taweetham; Kanithasevi, Siradanai; Lojanarungsiri, Maytouch; Pakwilaikiat, Puh – Journal of Chemical Education, 2019
We discuss the use of a simple piece of equipment made of a 50 mL syringe attached to a 2 mL graduated pipet to demonstrate Boyle's law and Charles's law. A plot of the hydrostatic pressure against the reciprocal of the volume of the gas read from the equipment is linear as discussed in the paper and gives the atmospheric pressure at the…
Descriptors: Science Instruction, Science Experiments, Science Laboratories, Laboratory Experiments
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Elliott, Leslie Atkins; Sippola, Elizabeth; Watkins, Jeffrey – Journal of Chemical Education, 2019
In this article, we describe how the Gaussian Gun, a simple configuration of magnets and ball bearings, can be leveraged to connect ideas from physics to representations and ideas that are central to chemistry and challenging for students to learn. In particular, we show how the Gaussian Gun, an arrangement of ball bearings and magnets, models…
Descriptors: Science Instruction, Chemistry, Physics, Magnets
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