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Reactions: Acetylene Preparation of acetylene and the reaction of chlorine with acetylene are demonstrated. An antique carbide lamp is also demonstrated.
JCE Resources for Chemistry and WaterErica K. Jacobsen This annotated bibliography collects the best that past issues of JCE have to offer for use with the 2008 Chemists Celebrate Earth Day theme, "Streaming Chemistry". Jacobsen, Erica K. J. Chem. Educ.2008, 85, 188.
Water / Water Chemistry
Sedimentation Time Measurements of Soil Particles by Light Scattering and Determination of Chromium, Lead, and Iron in Soil Samples via ICPPatricia Metthe Todebush and Franz M. Geiger In this two-part general chemistry laboratory activity, students study soil samples from home and from campus. In part one, the samples are placed in water and the suspended colloid fraction is separated using filtration, followed by a determination of colloid sedimentation rates via light scattering. In part two, the solid phase of the soil samples is dissolved in acid and analyzed for chromium, lead, and iron using an inductively coupled plasma spectrometer. The experiment can be expanded to include arsenic. Through these experiments students can draw conclusions about the physical and chemical behavior of solid components in soil, paying particular attention to their propensity for transporting and chemically transforming pollutants in the environment. Todebush, Patricia Metthe; Geiger, Franz M. J. Chem. Educ.2005, 82, 1542.
Colloids |
Geochemistry |
Water / Water Chemistry |
Aqueous Solution Chemistry |
Solids |
Surface Science |
Metals
Humic Acids: Marvelous Products of Soil ChemistryGeoffrey Davies, Elham A. Ghabbour, and Cornelius Steelink Classification, physical and chemical characteristics, formation, structure and sources of humic substances. Davies, Geoffrey; Ghabbour, Elham A.; Steelink, Cornelius. J. Chem. Educ.2001, 78, 1609.
Ice and WaterEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Water / Water Chemistry
Drinking Bird (GCMP)David M. Whisnant Drinking Bird: this is a resource in the collection "General Chemistry Multimedia Problems". The drinking bird's felt-covered head dips into the beaker of water as it bobs up and down. The tube goes from the bottom of the body to its head. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
Water / Water Chemistry
Electrolisis 1 (GCMP)David M. Whisnant Electrolisis of Water #1: this is a resource in the collection "General Chemistry Multimedia Problems". In this problem we will contrast the electrolysis of water with boiling. General Chemistry Multimedia Problems ask students questions about experiments they see presented using videos and images. The questions asked apply concepts from different parts of an introductory course, encouraging students to decompartmentalize the material.
