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Bernardo A. Nogueira; Ne´lia C. T. Tavares; Maria Ine^s P. Mendes; Diogo A. Pereira; Ami´lcar Duque-Prata; Fa´bio A. Schaberle – Journal of Chemical Education, 2023
Molecular School (MS) is an extracurricular initiative intended to show relevant and complex concepts of chemical sciences to precollege students. The main goal is to motivate the participants to expand their awareness of chemical sciences and to acknowledge its relevance in everyday life, in order to stimulate the students to engage in chemistry…
Descriptors: Science Instruction, Chemistry, Relevance (Education), Student Interests
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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
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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
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Duarte, Rita C. C.; Ribeiro, M. Gabriela T. C.; Machado, Adélio A. S. C. – Journal of Chemical Education, 2015
A procedure to improve the greenness of a synthesis, without performing laboratory work, using alternative protocols available in the literature is presented. The greenness evaluation involves the separate assessment of the different steps described in the available protocols--reaction, isolation, and purification--as well as the global process,…
Descriptors: Chemistry, Science Instruction, College Science, Undergraduate Study