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Beni B. Dangi; Maggie A. Cooper; Nathaniel Carnegie; Judy Clark – Journal of Chemical Education, 2025
A laboratory experiment has been designed for teaching laboratories aimed at training students in the basics of spectroscopy in junior and senior level undergraduate chemistry courses. Despite the ubiquity of light-based tools in modern science, students often find it difficult to comprehend light and light-matter interactions. A portable…
Descriptors: Undergraduate Students, Chemistry, Science Instruction, Spectroscopy
Erceg, Ruzica; Maksimovic´, Jelena P.; Pagnacco, Maja C. – Journal of Chemical Education, 2021
Ultraviolet (UV)-visible (Vis) spectroscopy is widely used in all modern laboratories as a routine method of analysis. The monitoring of chemical reactions in an aqueous solution involving a gas product is a demanding task but particularly for oscillatory reactions which are obtainable in a narrow concentration range. In this work, the…
Descriptors: Spectroscopy, Light, Chemistry, Science Laboratories
Savakinas, Mallory V.; Frey, Olivia M.; Piro, Nicholas A.; Rhile, Ian J.; Hamann, Christian S. – Journal of Chemical Education, 2021
Friedel-Crafts alkylation reactions using a curated set of alcohols provide students with the opportunity to combine the study of electrophilic aromatic substitution with carbocation rearrangements. In this experiment students may be presented with up to nine alcohols that yield six products, all synthesized under identical reaction conditions.…
Descriptors: Science Instruction, Spectroscopy, Science Experiments, Teaching Methods
Sara E. Johnson; Taylor A. Bell; Joseph K. West – Journal of Chemical Education, 2022
As an alternative to the traditional metallocene laboratory targets, students synthesize Cp[subscript 2]TiCl[subscript 2], bis([eta][superscript 5]-cyclopentadienyl)dichloridotitanium(IV), from the mildly moisture-sensitive cis-TiCl[subscript 4](thf)[subscript 2]. Air-free handling techniques are emphasized, but the (mostly) air-stable,…
Descriptors: Science Education, Chemistry, Spectroscopy, Light
Keithley, Richard B.; Sullivan, Dylan T.; Dodd, John M., II; Iyer, Kavya V.; Sarisky, Catherine A.; Johann, Timothy W. – Journal of Chemical Education, 2021
Techniques and instrumentation that involve fluorescence are used in many careers related to biology and biochemistry. However, due to the expense of instrumentation, the theory and practice of fluorescence spectroscopy is commonly concentrated in instrumental analysis in most curricula, a class rarely required for biology and biochemistry majors.…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study
Lincoln, James – Physics Teacher, 2018
The January 2018 issue of "The Physics Teacher" saw two articles that featured the RSpec Explorer as a supplementary lab apparatus. The RSpec Explorer provides live video spectrum analysis with which teachers can demonstrate how to investigate features of a diffracted light source. In this article I provide an introduction to the device…
Descriptors: Video Technology, Spectroscopy, Laboratory Equipment, Physics
Yimkosol, Warangkana; Dangkulwanich, Manchuta – Journal of Chemical Education, 2021
Colorful transitions of various acid-base indicators have been used to illustrate the concept of chemical equilibria, especially in spectrophotometric determination of the equilibrium constants or pKa values. To accommodate an online laboratory environment necessitated by the COVID-19 pandemic, this work employs color analyses from digital images…
Descriptors: Chemistry, Science Instruction, Teaching Methods, Laboratory Experiments
Herrera-González, Ana M.; Caldera-Villalobos, Martín; Pérez-Mondragón, Alma A.; Cuevas-Suárez, Carlos E.; González-López, J. Abraham – Journal of Chemical Education, 2019
An experiment for the calculation of the degree of double bond conversion, after a polymerization reaction, of photopolymerizable liquid monomers using FTIR-ATR spectroscopy is reported. The experiment was successfully conducted with undergraduate students in materials engineering during the Fundamentals of Polymeric Material course. Students…
Descriptors: Spectroscopy, Chemistry, Science Instruction, Undergraduate Students
Özdemir, Erdogan; Coramik, Mustafa; Ürek, Handan – Physics Education, 2019
Optics is one of the subject areas in which students have difficulty learning. Establishing the right connections between the concepts of optics and daily life supports the learning of the concepts of optics. In addition, this connection increases the students' motivation to learn optical issues. In this study, three activities related to prisms…
Descriptors: Optics, Scientific Concepts, Physics, Light
Andrews, Steven S.; Tretton, James – Journal of Chemical Education, 2020
Circular dichroism (CD) is the differential absorption of left and right circularly polarized light. It arises from molecular electron oscillations that are driven by both the light's electric and magnetic fields, where the effects are in phase for one circular polarization and out of phase for the other. We describe these interactions, which have…
Descriptors: Science Instruction, College Science, Undergraduate Study, Chemistry
Volpe, Kate; Podlesny, Erin E. – Journal of Chemical Education, 2020
A continuous flow photopinacol coupling of benzophenone has been developed and implemented in the undergraduate laboratory. This photoreduction was accomplished using 2-propanol as an H atom donor and cosolvent in the reaction. The simple and inexpensive UV light source and flow reactor design (less than $350/photochemical flow system) provide an…
Descriptors: College Science, Science Instruction, Undergraduate Study, Science Laboratories
Lietard, Aude; Screen, Martin A.; Flindt, Diana L.; Jordan, Caleb J. C.; Robson, Jacquie M.; Verlet, Jan R. R. – Journal of Chemical Education, 2021
A dual-function student-crafted instrument is described as part of a laboratory activity aimed to teach both the principles and practical aspects of absorption spectroscopy to secondary and introductory undergraduate students. Using minimal changes in an arrangement that is based on interlocking bricks and low-cost components, both a fluorometer…
Descriptors: Science Instruction, Science Laboratories, Spectroscopy, Undergraduate Students
Bullis, Ryan; Coker, Joseph; Belding, Jacob; De Groodt, Adam; Mitchell, Dylan W.; Velazquez, Nancy; Bell, Ashtyn; Hall, Jaycee; Gunderson, William A.; Gunderson, Julie E. C. – Journal of Chemical Education, 2021
A fluorometer is a device that measures the spectroscopic properties of fluorescent materials, and fluorometry is used widely in chemistry research settings to characterize fluorescent samples. One of the obstacles faced by undergraduate programs looking to implement fluorometer-based experiments into their laboratory curriculum is the high cost…
Descriptors: Chemistry, Measurement Equipment, Laboratory Equipment, Spectroscopy
Amirjani, Amirmostafa; Koochak, Niloofar Namazi; Haghshenas, Davoud Fatmehsari – Journal of Chemical Education, 2019
In the laboratory experiment described here, students synthesize silver nanostructures (AgNS) with different shapes and sizes to elucidate the shape- and size-dependent optical properties of nanostructured materials. Students also develop understanding of some thermodynamic and kinetic aspects of the synthesis process through this experiment. In…
Descriptors: Spectroscopy, Thermodynamics, Laboratory Experiments, Science Instruction
Kvittingen, Lise; Sjursnes, Birte Johanne – Journal of Chemical Education, 2020
An easily constructed and inexpensive polarimeter with an optical rotation angle resolution of about 0.5° is presented. It is made from small pieces of polarizing film, 2 LEDs, a protractor, and a few wires, all held in place with plastic interlocking toy bricks, such as Lego bricks. The instrument was used to demonstrate the optical rotation of…
Descriptors: High School Students, Secondary School Science, Science Activities, Optics