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Baum, Rudy – Chemical and Engineering News, 1982
Discusses danger of explosions with molten salts baths, commonly used as heat-transfer media. One such explosion involved use of a bath containing 3-lb sodium nitrite and 1-lb potassium thiocyanate. Although most commercially available mixtures for heat transfer contain oxidizers, a reducer (thiocyanate) was included which possibly triggered the…
Descriptors: Chemical Reactions, Chemistry, College Science, Higher Education
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Gove, H. E. – Physics Teacher, 1983
Tandem electrostatic accelerators produce beams of positive ions which are used to penetrate atomic nuclei in a target, inducing nuclear reactions whose study elucidates varied properties of the nucleus. Uses of the system, which acts like a mass spectrometer, are discussed. These include radiocarbon dating measurements. (JN)
Descriptors: Acceleration (Physics), College Science, Higher Education, Laboratory Procedures
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Sun, Marjorie – Science, 1980
This article reports the adoption of new policies to restrict experiments on animals in the elementary or secondary school classroom. The controversy involving animal welfare groups is discussed as it relates to animal abuse by students. (SA)
Descriptors: Animal Caretakers, Biological Sciences, Class Activities, Elementary Secondary Education
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Bent, Henry A. – Journal of Chemical Education, 1986
Provides a running commentary on a chemistry instructor's first day in a first course in chemistry. Focuses on the use of fire and chemists' attempts to explain this phenomenon. Provides the ongoing descriptions of the experiments, a summary of the observations, and the key comments made by the instructor. (TW)
Descriptors: Chemical Reactions, Chemistry, College Science, Heat