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Direct linkSmith, Michael J.; Vale, Ilda C.; Gray, Fiona M. – Journal of Chemical Education, 2014
Paper is an extraordinary example of a composite engineering material with practical use in a huge variety of applications. Since its invention in China, there have been many alterations to manufacturing techniques, component formulation, and surface finishing, yet the essential characteristics of paper have not changed greatly. The objective of…
Descriptors: Paper (Material), Science Instruction, Chemistry, Foreign Countries
Smith, Michael J.; Fonseca, Antonio M.; Silva, M. Manuela – Journal of Chemical Education, 2009
The assembly and use of a laboratory version of a secondary cell based on the lead-lead oxide system is described. The cell is easy to construct, sufficiently robust for student use, and has a conveniently low practical capacity of about 5 mA h. This modest cell capacity allows cell assembly, electrode formation and discharge characterization…
Descriptors: Science Laboratories, Cytology, Science Instruction, Teaching Methods
