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Sahil Sood; Sean Fang; Alexander Chengyu Wang; Thomas Luong; Justin Keonhyoung Kim; Arkajyoti Sinha; John Jerome; Miriam H. Rafailovich – Journal of Chemical Education, 2023
Hands-on learning is a staple in high school science education, as it provides students with a fast-learning curve and a great degree of field competency. However, due to the safety risks associated with high school students in university chemistry laboratory settings, high school students rarely engage in authentic hands-on chemical learning. To…
Descriptors: High School Students, Chemistry, Science Instruction, Laboratory Experiments
Rosu, Cornelia; Cueto, Rafael; Veillion, Lucas; David, Connie; Laine, Roger A.; Russo, Paul S. – Journal of Chemical Education, 2017
Volatile compounds from polymeric materials such as weatherstripping were identified by solid-phase microextraction (SPME), a solvent-free analytical method, coupled to gas chromatography-mass spectrometry (GC-MS). These compounds, originating from additives and fillers used in weatherstripping processing, were mostly polycyclic aromatic…
Descriptors: Undergraduate Students, High School Students, College Science, Secondary School Science
Kamber, Nahrain E.; Tsujii, Yasuhito; Keets, Kate; Waymouth, Robert M.; Pratt, Russell C.; Nyce, Gregory W.; Hedrick, James L. – Journal of Chemical Education, 2010
The depolymerization of the plastic polyethylene terephthalate (PET or PETE) is described in this laboratory procedure. The transesterification reaction used to depolymerize PET employs a highly efficient N-heterocyclic carbene catalyst derived from a commercially available imidazolium ionic liquid. N-heterocyclic carbenes are potent nucleophilic…
Descriptors: Laboratory Procedures, Organic Chemistry, Science Instruction, Plastics
Walker, Jearl – Scientific American, 1990
Describes the necking of polymer sheets that occurs when they are stretched. Discusses the effect and the mechanisms of necking. Lists four references. (YP)
Descriptors: Laboratory Experiments, Laboratory Procedures, Matter, Optics