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A Forensic Experiment: The Case of the Crime at the Cinema
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Valente Nabais, J. M.; Costa, Sara D. – Journal of Chemical Education, 2017
This paper reports an experimental activity where students have to carefully analyze the evidence collected at the crime scene, namely fibers and lipstick traces. The fibers are analyzed by infrared spectroscopy, solubility tests, and optical microscopy, while in turn the lipstick traces are investigated by thin layer chromatography. Students also…
Descriptors: Science Instruction, Crime, College Science, Undergraduate Study
Circular Dichroism of G-Quadruplex: A Laboratory Experiment for the Study of Topology and Ligand Binding
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Carvalho, Josue´; Queiroz, João A.; Cruz, Carla – Journal of Chemical Education, 2017
Circular dichroism (CD) has emerged as one of the standard biophysical techniques for the study of guaninequadruplex (G4) folding, cation effect, and ligand binding. The utility of this technique is based on its robustness, ease of use, and requirement of only small quantities of nucleic acid. This experiment is also extendable to the classroom…
Descriptors: Science Experiments, Laboratory Experiments, Science Laboratories, Chemistry
Saccharin Derivative Synthesis via [1,3] Thermal Sigmatropic Rearrangement: A Multistep Organic Chemistry Experiment for Undergraduate Students
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Fonseca, Custódia S. C. – Journal of Chemical Education, 2016
Saccharin (1,2-benzisothiazole-3-one 1,1-dioxide) is an artificial sweetener used in the food industry. It is a cheap and easily available organic compound that may be used in organic chemistry laboratory classes for the synthesis of related heterocyclic compounds and as a derivatizing agent. In this work, saccharin is used as a starting material…
Descriptors: Synthesis, Undergraduate Students, Science Experiments, Organic Chemistry
Investigating the Antioxidant Capacity of Fruits and Fruit Byproducts through an Introductory Food Chemistry Experiment for High School
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Soares, Cristina; Correia, Manuela; Delerue-Matos, Cristina; Barroso, M. Fátima – Journal of Chemical Education, 2017
This paper reports a laboratorial internship included in the Portuguese Science and Technology promotion program "Internships for Young People in Laboratories (Ciência Viva no Laboratório)", which provided high school students an opportunity to approach the reality of scientific and technological research in a higher education…
Descriptors: Food, Chemistry, Science Instruction, High School Students
An Educational Device for a Hands-on Activity to Visualize the Effect of Atherosclerosis on Blood Flow
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de Almeida, J. P. P. G. L.; de Lima, J. L. M. P. – Advances in Physiology Education, 2013
An educational device was created to develop a hands-on activity to illustrate how atherosclerosis can dramatically reduce blood flow in human vessels. The device was conceived, designed, and built at the University of Coimbra, in response to a request from the Exploratorio Infante D. Henrique Science Centre Museum, where it is presently…
Descriptors: Foreign Countries, Physiology, Science Education, Experiential Learning
Home Technology and Children's Science Education.
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Cardoso, Lurdes – 2002
The purpose of this paper is to present an ethnographic study (Cardoso, 1999) involving six primary school pupils and doing simple experiments with everyday home equipment in the context of learning science. The hands-on science activities were carried out by children with the help of their parents. Results showed that children learnt at home and…
Descriptors: Elementary Education, Family Environment, Foreign Countries, Hands on Science