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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.
The Purification of Water by Freeze-Thaw or Zone MeltingJames Oughton, Silas Xu, and Rubin Battino Quantitative investigation of the purification of slat water solutions through the process of partial freezing. Oughton, James; Xu, Silas; Battino, Rubin. J. Chem. Educ.2001, 78, 1373.
Conductivity |
Phases / Phase Transitions / Diagrams |
Separation Science |
Quantitative Analysis |
Water / Water Chemistry |
Aqueous Solution Chemistry |
Solutions / Solvents
The Softening of Hard Water and Complexometric Titrations: An Undergraduate ExperimentHelena Ceretti, Enrique A. Hughes, and Anita Zalts An experiment in which (i) water hardness is explained and demonstrated; (ii) ion-exchange resin properties are visually demonstrated and then used for softening water; (iii) complexometric titrations are used for evaluating water hardness before and after softening; and (iv) acid-base titration can be used to show that the Ca/Mg ions removed by the ion exchanger are replaced by H ions. Ceretti, Helena; Hughes, Enrique A.; Zalts, Anita. J. Chem. Educ.1999, 76, 1420.
Ion Exchange |
Quantitative Analysis |
Titration / Volumetric Analysis |
Water / Water Chemistry |
Acids / Bases
Integrating High School Chemistry with Environmental Studies and ResearchJack Randall This article is a summary of a presentation made at the 1996 BCCE in Clemson, SC, as part of a symposium detailing the integration of environmental topics into Chemistry curricula. High school chemistry has long used environmental topics to enhance the study of various components of the curriculum. This article illustrates the benefits of incorporating environmental science as an integral part of a high school Chemistry course. Randall, Jack. J. Chem. Educ.1997, 74, 1409.
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.
