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Paiva, Victor T. C.; Parma, Eduardo; Buffon, Regina – Journal of Chemical Education, 2020
For the past 10 years, the Virtual Tournament of Chemistry, TVQ, has been held in Brazil, engaging high school students with challenging questions that require cooperation, effort, and a literature search, while exploring the advantages of the Internet as a tool for self-instruction. The tournament has worked both as a way of narrowing the gap…
Descriptors: High School Students, Grade 10, Independent Study, Internet
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Set, Seng; Ford, David; Kita, Masakazu – Journal of Chemical Education, 2015
This research revealed that metal ions with different charges could significantly affect the viscosity of aqueous sodium carboxylmethylcellulose (CMC) solution. On the basis of an Ostwald viscometer, an improvised apparatus using a dropping ball for examining the viscosity of liquids/solutions has been developed. The results indicate that the…
Descriptors: Science Instruction, Molecular Structure, Metallurgy, Chemistry