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NEACT Journal | 2 |
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Guides - Classroom - Learner | 2 |
Journal Articles | 2 |
Guides - Classroom - Teacher | 1 |
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Rohr, Walter – NEACT Journal, 1995
Presents two experiments that demonstrate phase changes. The first experiment explores phase changes of carbon dioxide using powdered dry ice sealed in a piece of clear plastic tubing. The second experiment demonstrates an equilibrium process in which a crystal grows in equilibrium with its saturated solution. (PVD)
Descriptors: Chemical Equilibrium, Chemical Reactions, Chemistry, Demonstrations (Science)
Klein, Jessie W.; Patev, Paul – NEACT Journal, 1998
Presents three experiments to introduce students to different kinds of chromatography: (1) paper chromatography; (2) gel filtration chromatography; and (3) reverse-phase liquid chromatography. Written in the form of a laboratory manual, explanations of each of the techniques, materials needed, procedures, and a glossary are included. (PVD)
Descriptors: Chemical Analysis, Chemistry, Chromatography, Demonstrations (Science)