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Hardness of Solid Substances - Grinding A number of metals and nonmetals are ground with a mortar and pestle. The nonmetals shown here are all soft (due to weak intermolecular forces), but the metals vary in hardness.
Covalent Bonding |
Nonmetals |
Physical Properties |
Solids |
Metallic Bonding |
Metals
Journal Articles: First 3 results.
Pedagogies:
Modifying Optical Properties of ZnO Films by Forming Zn1-xCoxO Solid Solutions via Spray PyrolysisAnne K. Bentley, Gabriela C. Weaver, Cianán B. Russell, William L. Fornes, Kyoung-Shin Choi, and Susan M. Shih Presents a simple experiment demonstrating the presence of an energy band gap in a semiconductor and its relationship to the material's composition through observed color and UVvis absorption. Bentley, Anne K.; Weaver, Gabriela C.; Russell, Cianán B.; Fornes, William L.; Choi, Kyoung-Shin; Shih, Susan M. J. Chem. Educ.2007, 84, 1183.
Materials Science |
Semiconductors |
Solid State Chemistry |
UV-Vis Spectroscopy
Preparation of CdS Nanoparticles by First-Year UndergraduatesKurt Winkelmann, Thomas Noviello, and Steven Brooks First-year undergraduate students prepare bulk and nanometer-sized cadmium sulfide clusters within water-in-oil micelles and calculate particle size using the effective mass model. Winkelmann, Kurt; Noviello, Thomas; Brooks, Steven. J. Chem. Educ.2007, 84, 709.
Colloids |
Materials Science |
Nanotechnology |
Micelles |
Semiconductors |
UV-Vis Spectroscopy
Chemistry of Electronic GasesJames R. Clark The chemistry of electronic gases can be used in the classroom to provide many interesting examples of molecular structures, chemical reactions, periodic trends, and environmental chemistry. Clark, James R. J. Chem. Educ.2006, 83, 857.
