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Direct linkCampbell, Dean J.; Bosma, Wayne B.; Bannon, Stephen J.; Gunter, Molly M.; Hammar, Margaret K. – Journal of Chemical Education, 2012
FriXion erasable pens contain thermochromic inks that have colored low-temperature forms and colorless high-temperature forms. Liquid nitrogen can be used to kinetically trap the high-temperature forms of the ink at temperatures at which ordinarily the low-temperature forms are more thermodynamically stable. (Contains 2 figures.)
Descriptors: Chemistry, Thermodynamics, Science Instruction, Scientific Principles
Campbell, Dean J.; Miller, Josiah D.; Bannon, Stephen J.; Obermaier, Lauren M. – Journal of Chemical Education, 2011
LEGO bricks can be used for a number of demonstrations of chemical structures and properties, especially at the nanoscale level. These bricks can also be used to model instrumentation that probes these structures and properties. Detailed resources about many of these demonstrations are located on the extensive Web site "Exploring the Nanoworld…
Descriptors: Chemistry, Internet, Science Education, Web Sites
