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Showing 1 to 15 of 36 results Save | Export
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Omar A. El Seoud; Nicolas Keppeler; Daiana M. F. Sandrini; Giovanni R. Morselli – Journal of Chemical Education, 2023
An active-learning approach was employed in a project for our chemistry major students on the synthesis of biodiesel (BD) from an Amazon region oil. The project, involving activities in class and in the laboratory, was given during 8 weeks of the spring semester of 2022. The students were asked about their previous contact with the synthesis and…
Descriptors: Chemistry, Science Laboratories, Majors (Students), Undergraduate Students
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A. M. Ranjika P. Bopegedera – Journal of Chemical Education, 2023
Calorimetry is a central concept in the first semester general chemistry curriculum, and constant pressure (coffee-cup) calorimetry is a common experiment in the laboratory. However, constant volume (bomb) calorimetry is traditionally reserved for the physical chemistry laboratory. This article describes the advantages of incorporating bomb…
Descriptors: Chemistry, Science Instruction, Science Experiments, Laboratory Experiments
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Hinterberger, Elizabeth; Ackerly, Erin; Chen, Yingjie; Li, Yuguang C. – Journal of Chemical Education, 2021
This study presents a low-cost Arduino-based gas chromatography system that is suitable for teaching analytical chemistry in an undergraduate laboratory. The gas chromatography system is built with commonly available materials with a total cost less than $100. A Python code is also provided as a user interface that will record data and display the…
Descriptors: Chemistry, College Science, Science Instruction, Science Laboratories
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Chukwuneke, Chikaodili E.; Madu, Joshua O.; Agboola, Bolade O. – Journal of Chemical Education, 2021
Trace metals when present in crude oil or fuels are of economic significance in refining and to the combustion engines that use them. Herein, we develop a laboratory activity that trains students on how to analyze crude oil samples for ash and trace metal content while giving them the opportunity to acquire skills needed as a quality control…
Descriptors: Science Instruction, Chemistry, College Science, Undergraduate Study
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McCance, Katherine R.; Suarez, Antonio; McAlexander, Shana L.; Davis, Georganna; Blanchard, Margaret R.; Venditti, Richard A. – Journal of Chemical Education, 2021
Many students may not be aware that renewable biological materials can be converted into multiple bioproducts and biofuels using a biorefinery process, a more sustainable alternative to conventional crude oil refineries. By using waste from pineapple, a plant material that most students are familiar with, a biorefinery can be modeled to…
Descriptors: Science Instruction, Fuels, Food, Plants (Botany)
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Owen, Bradley A.; Starvaggi, Nicholas C.; Mensah, Taylor I.; Mills, Isaac N. – Journal of Chemical Education, 2020
Thermal conductivity is generally the tool of choice for quantification of fixed gases, particularly lighter-than-air gases. Unfortunately, gas chromatography-thermal conductivity detectors (GC-TCDs) are difficult to introduce in first- and second-year chemistry courses where the cost and number of instruments, as well as the space required, is…
Descriptors: Science Instruction, College Science, Undergraduate Study, Science Laboratories
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dos Anjos, Rodrigo; Silva, Márcio Santos – Journal of Chemical Education, 2020
Biodiesel is an important biomass, largely employed in the transport sector and produced from vegetable oils. Additionally, waste cooking oils may be reused to produce biodiesel fuel, minimizing environmental pollution. A laboratory experiment that affords a widespread way to discuss degradation concepts and tools for used vegetable oil…
Descriptors: Fuels, Science Instruction, Science Laboratories, Science Experiments
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Khamhaengpol, Arunrat; Phewphong, Sunti; Chuamchaitrakool, Porntip – Journal of Chemical Education, 2022
Technology and validation methods for producing biodiesel have been updated and have kept advancing. Creative raw materials used in producing environmentally friendly biodiesels have also attracted interest from scientists. Thus, learning and teaching methods on biodiesel production at the high school level need to be up to date. However, there…
Descriptors: Fuels, Science Instruction, High School Students, Secondary School Science
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Habeeb, Zeeshan; Lewis, Rubina; Liu, Shuangyuan Michael; Prosser, R. Scott – Journal of Chemical Education, 2020
A modular experiment for upper-level undergraduate students is presented, featuring the product cycle and process evaluating the quality and quantity of biodiesel obtained from a microalgae feedstock grown under carbon-supplemented and nutrient-deprived conditions. Batch reactors are used to cultivate and harvest microalgae, which undergo…
Descriptors: Science Instruction, College Science, Undergraduate Study, Fuels
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Wang, Xisen; Chrzanowski, Matthew; Liu, Yujuan – Journal of Chemical Education, 2020
A safe, convenient, and environmentally benign laboratory experiment for the synthesis of biodiesel from six kinds of vegetable oils has been developed for the introductory organic chemistry laboratory. The experiment uses ultrasonic irradiation in the presence of a base catalyst at room temperature and atmospheric pressure. Because of safer and…
Descriptors: Organic Chemistry, Science Instruction, College Science, Undergraduate Study
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Cavalcante dos Santos, Rafael; Cavalcanti, Juliane Natalizi Cabral; Werneck do Carmo, Elisa Carneiro; de Souza, Fernando Costa; Soares, Wesley Garcia; de Souza, Cristiane Gimenes; de Andrade, Débora França; d'Avila, Luiz Antonio – Journal of Chemical Education, 2020
An experimental procedure is presented that was developed by fifth-year chemical engineering and industrial chemistry undergraduates at the Federal University of Rio de Janeiro doing the discipline on Experimental Organic Technology. The aim of this study was to apply the solvatochromic effect of the dye Nile Blue chloride to the characterization…
Descriptors: Science Instruction, College Science, Undergraduate Study, Chemistry
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Nogales-Delgado, Sergio; Encinar Martín, José María – Education Sciences, 2019
Universities play an important role in society. On the other hand, more and more governments and international organizations are concerned about the environment. Thus, both in their educational programs and research, as well as in the case of public exhibitions, universities are increasingly including subjects related to the environment and its…
Descriptors: Environmental Education, Foreign Countries, Fuels, Science Laboratories
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Wilckowska Iwanek, Ewa; Glinski, Marek – Journal of Chemical Education, 2018
In this laboratory experiment, students performed thermogravimetric analysis (TGA) coupled with mass spectrometry (MS) of herbaceous materials (TGA-MS) and learned to analyze mass-loss curves, as well as identify common fragmentation ions. The experiment is the first one to present the application of TGA in a currently relevant topic: biomass…
Descriptors: Laboratory Experiments, Science Experiments, Science Laboratories, Measurement Equipment
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Yu, Henson L. Lee; Domingo, Perfecto N., Jr.; Yanza, Elliard Roswell S.; Guidote, Armando M., Jr. – Journal of Chemical Education, 2015
This article demonstrates how to make a low-cost ethanol burner utilizing soda cans. It burns with a light blue flame suitable for out-of-laboratory flame test demonstrations where interference from a yellow flame needs to be avoided.
Descriptors: Science Instruction, Science Laboratories, College Science, Fuels
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Varberg, Thomas D.; Pearlman, Bradley W.; Wyse, Ian A.; Gleason, Samuel P.; Kellett, Dalir H. P.; Moffett, Kenneth L. – Journal of Chemical Education, 2017
In this paper, we describe an experiment for the undergraduate physical chemistry laboratory in which students determine the speed of sound in the gases He, N[subscript 2], CO[subscript 2], and CF[subscript 3]CH[subscript 2]F. The experimental apparatus consists of a closed acrylic tube containing the gas under study. White audio noise is injected…
Descriptors: Science Instruction, College Science, Undergraduate Students, Chemistry
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