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Josefina Ventre; Agustina L. Renna; Francisco J. Ibañez – Journal of Chemical Education, 2023
It is crucial nowadays to predict in a fast and simple manner physical-chemical behaviors like, the size-dependent optical properties of gold nanospheres (Au NSs). The idea behind this experiment is trying to replace (as much as possible) robust and expensive microscopy techniques with UV-vis spectrophotometry and friendly simulations. Students…
Descriptors: Chemistry, Prediction, Science Experiments, Spectroscopy
Garrido-Gonza´lez, Jose´ J.; Trillo-Alcala´, María; Sa´nchez-Arroyo, Antonio J. – Journal of Chemical Education, 2018
The generation of secondary colors in digital devices by means of the additive red, green, and blue color model (RGB) can be a valuable way to introduce students to the basics of spectroscopy. This work has been focused on the spectral separation of secondary colors of light emitted by a computer screen into red, green, and blue bands, and how the…
Descriptors: Science Instruction, Spectroscopy, Color, Educational Technology
Bigger, Stephen W.; Bigger, Andrew S.; Ghiggino, Kenneth P. – Journal of Chemical Education, 2014
The "FluSpec" educational software package is a fully contained tutorial on the technique of fluorescence spectroscopy as well as a simulator on which experiments can be performed. The procedure for each of the experiments is also contained within the package along with example analyses of results that are obtained using the software.
Descriptors: Science Instruction, Computer Software, Teaching Methods, Educational Technology
Ugone, Valeria; Garribba, Eugenio; Micera, Giovanni; Sanna, Daniele – Journal of Chemical Education, 2015
In this laboratory activity, the equilibrium between square pyramidal and octahedral V(IV)O[superscript 2+] complexes is described. We propose a set of experiments to synthesize and characterize two types of V(IV)O[superscript 2+] complexes. The experiment allows great flexibility and may be effectively used at a variety of levels and the activity…
Descriptors: Chemistry, Science Instruction, Science Experiments, Science Laboratories
Costello, Kelsey; Doan, Kevin Thinh; Organtini, Kari Lynn; Wilson, John; Boyer, Morgan; Gibbs, Greglynn; Tribe, Lorena – Journal of Chemical Education, 2014
This laboratory was developed by undergraduate students in collaboration with the course instructor as part of a peer-developed and peer-led lab curriculum in a general chemistry course. The goal was to explore the hypothesis that crystal violet lactone was responsible for the thermochromic properties of a sipping straw using a FT-IR for…
Descriptors: Science Instruction, Science Laboratories, Science Experiments, Spectroscopy
Rice, Nicholas P.; de Beer, Martin P.; Williamson, Mark E. – Journal of Chemical Education, 2014
A simple low-cost experiment has been developed for the measurement of the binary diffusion coefficients of liquid substances. The experiment is suitable for demonstrating molecular diffusion to small or large undergraduate classes in chemistry or chemical engineering. Students use a cell phone camera in conjunction with open-source image…
Descriptors: Science Instruction, Chemistry, Science Experiments, College Science
Bigger, Stephen W.; Bigger, Andrew S. – Journal of Chemical Education, 2013
The FluAnisot educational software package is a fully contained tutorial on the technique of fluorescence anisotropy measurement as well as a simulator on
which two experiments can be performed. The procedure for each of the experiments is also contained within the package along with example analyses of results that were obtained using the…
Descriptors: Computer Software, Computer Uses in Education, Educational Technology, Science Instruction
Mehl, Andrew F.; Crawford, Mary A.; Zhang, Lei – Journal of Chemical Education, 2009
Few laboratory procedures describe the use of circular dichroism (CD) at the undergraduate level. To increase the number of laboratory exercises using CD, a thermal denaturation study of myoglobin using CD is described to assess protein stability. Values obtained from a more classic linear data analysis approach are consistent with data analyzed…
Descriptors: Laboratory Procedures, Data Analysis, Science Experiments, Spectroscopy
Cochran, Beverly; Lunday, Deborah; Miskevich, Frank – Journal of Chemical Education, 2008
Quantitative analysis of carbohydrates is a fundamental analytical tool used in many aspects of biology and chemistry. We have adapted a technique developed by Mathews et al. using an inexpensive scanner and open-source image analysis software to quantify amylase activity using both the breakdown of starch and the appearance of glucose. Breakdown…
Descriptors: Mechanics (Physics), Science Instruction, Chemistry, Computer Software
Prasad, Rajendra; Prasad, Surendra – Journal of Chemical Education, 2009
The formation constant of iron(III) complex with glycine (Gly) ligand in aqueous acidic medium (0.2 M HNO[subscript 3], I = 0.2 M at 28 plus or minus 1 degree C) was determined spectrophotometrically in which a competing color reaction between Fe(III) and SCN[superscript -] was used as an indicator reaction. Under the specified conditions Fe(III)…
Descriptors: Science Laboratories, Science Experiments, Teaching Methods, Spectroscopy
Masciocchi, Norberto; Galli, Simona; Sironi, Angelo; Dal Monte, Gabriella; Barea, Elisa; Salas, Juan Manuel; Navarro, Jorge A. R. – Journal of Chemical Education, 2008
The [Co(4-pyrimidinolate)[subscript 2](H[subscript 2]O)[subscript n]] species, which can be easily and selectively prepared by simple addition of aqueous solutions of the 4-pyrimidinolate organic ligand to Co(II) acetate (or nitrate) aqueous solutions (n = 4, 6) or by controlled heating of the hydrated phases (n = 0), proved to be versatile…
Descriptors: Chemistry, Science Instruction, Laboratory Experiments, College Science
Wakabayashi, Fumitaka – Journal of Chemical Education, 2008
A new type of DVD spectroscope, the periscope type, is described and the numerical analysis of the observed emission and absorption spectra is demonstrated. A small and thin mirror is put inside and an eighth part of a DVD is used as a grating. Using this improved DVD spectroscope, one can observe and photograph visible spectra more easily and…
Descriptors: Photography, Chemistry, Teaching Methods, Spectroscopy
Hongyi Wang – Journal of Chemical Education, 2005
A study uses the ChemDraw nuclear magnetic resonance spectroscopy (NMR) tool to process 15 para-substituted benzoic acids and generate (super 13)C NMR chemical shifts of C1 through C5. The data were plotted against their pK[subscript a] value and a fairly good linear fit was found for pK[subscript a] versus delta[subscript c1].
Descriptors: Physics, Computer Software, Chemistry, Spectroscopy
Bardar, Erin M.; Brecher, Kenneth – Astronomy Education Review, 2008
In this article, we present an overview of a suite of light and spectroscopy education materials developed as part of Project LITE (Light Inquiry Through Experiments). We also present an analysis of how introductory college astronomy students using these Project LITE materials performed on the Light and Spectroscopy Concept Inventory (LSCI)…
Descriptors: Computer Assisted Instruction, Spectroscopy, Light, Science Instruction
Castle, Karen J. – Journal of Chemical Education, 2007
In this undergraduate physical chemistry laboratory experiment, students acquire a high-resolution infrared absorption spectrum of carbon dioxide and use their data to show that the rotational-vibrational state populations follow a Boltzmann distribution. Data are acquired with a mid-infrared laser source and infrared detector. Appropriate…
Descriptors: Chemistry, Laboratory Experiments, Spectroscopy, Science Instruction
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