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For the textbook, chapter, and section you specified we found
46 Videos
4 Assessment Questions
351 Journal Articles
16 Other Resources
Videos: First 3 results
Centrifuging a Sample  John W. Moore, Jerrold J. Jacobsen, Lois M. Browne, John F. Zimmerman
The demonstration on this page shows a technique that should not be used by undergraduate chemistry laboratory. This video shows what happens to sample in a centrifuge while the centrifuge is on, and the result of stopping the centrifuge improperly. A narrative is included in this video: The centrifuging process allows the solvent to completely settle out. The jarring caused by hand braking destroys the distinct separation between supernatant and solid.
Separation Science |
Laboratory Equipment / Apparatus
Centrifuge  
Centrifuging safety considerations, centrifuging a sample, loading and unloading a centrifuge, removing the supernatant, and washing the precipitate are discussed and demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
Extraction  
Use of a separatory funnel to carry out extraction is demonstrated.
Laboratory Equipment / Apparatus |
Separation Science
View all 46 results
Assessment Questions: First 3 results
Reactions : Solubility (8 Variations)
Which of the following compounds are soluble in water?
Aqueous Solution Chemistry |
Precipitation / Solubility
Reactions : ExchangeRxn (10 Variations)
Which of the following compounds would result in an exchange reaction if mixed in an aqueous solution with Ba(OH)2?
Aqueous Solution Chemistry |
Reactions |
Precipitation / Solubility
Solutions : MixturesMolcPics (11 Variations)
Which of the following combinations of substances corresponds to the molecular scale diagram shown below?

Solutions / Solvents |
Noncovalent Interactions |
Precipitation / Solubility
View all 4 results
Journal Articles: First 3 results.
Pedagogies:
Designing and Conducting a Purification Scheme as an Organic Chemistry Laboratory Practical  Kate J. Graham, Brian J. Johnson, T. Nicholas Jones, Edward J. McIntee, and Chris P. Schaller
Describes an open-ended laboratory practical that challenges students to evaluate when different purification techniques are appropriate.
Graham, Kate J.; Johnson, Brian J.; Jones, T. Nicholas; McIntee, Edward J.; Schaller, Chris P. J. Chem. Educ. 2008, 85, 1644.
IR Spectroscopy |
Microscale Lab |
Molecular Properties / Structure |
NMR Spectroscopy |
Physical Properties |
Separation Science
Greener Alternative to Qualitative Analysis for Cations without H2S and Other Sulfur-Containing Compounds  Indu Tucker Sidhwani and Sushmita Chowdhury
The classic technique for the qualitative analysis of inorganic salts and mixtures relies on highly toxic hydrogen sulfide. Increasing environmental awareness has prompted the development of a green scheme for the detection of cations by spot tests that is simple and fast.
Sidhwani, Indu Tucker; Chowdhury, Sushmita. J. Chem. Educ. 2008, 85, 1099.
Green Chemistry |
Qualitative Analysis |
Separation Science
If You Were a Molecule in a Chromatography Column, What Would You See?  John Mattice
To visualize what takes place in a chromatography column, enlarge the molecules to human size and expand the columns to keep the ratio of size of molecule to size of column the same. Using such a model, this article explains how band broadening occurs as a result of resistance to mass transfer, multiple flow paths, and stagnant mobile phase.
Mattice, John. J. Chem. Educ. 2008, 85, 925.
Chromatography |
Gas Chromatography |
HPLC |
Separation Science
View all 351 articles
Other Resources: First 3 results
The Separation of Mixtures  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Separation Science
Distillation  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Physical Properties |
Separation Science
Solubility and Molecular Structure  Ed Vitz, John W. Moore
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Precipitation / Solubility
View all 16 results