15 Results
Principles of Gel Permeation Chromatography   
(Software, Instructional Material (1))
Principles of Gel Permeation Chromatography presents the principles of gel permeation chromatography (GPC) for students in introductory undergraduate courses of chemistry and biochemistry. These principles are presented in four sections: Introduction, Real Lab, Virtual Lab, and Microscopic Model. The Introduction and Real Lab sections present a brief view of the basic experimental apparatus typically used in laboratory GPC in order to provide a concrete connection of the real process of separation. The basic elements of column chromatography, emphasizing the stationary and mobile phases, are presented in the Introduction, followed by a sequence of pictures and texts describing major steps in GPC analysis in the Real Lab section. The Virtual Lab section is a simulator. Three samples are available for a virtual GPC experiment: sample 1, containing hemoglobin; sample 2, containing methylene blue; and sample 3, containing both methylene blue and hemoglobin. Each sample undergoes a virtual separation run, which is dynamically represented in three ways in the software: a virtual column, the collected fractions, and a virtual chromatogram. This threefold representation allows the simultaneous view of key aspects of the process to demonstrate the correlation between the experimental procedure and the resulting chromatogram.
Chromatography   
(Other (1))
A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Gas Chromatograph   
(Movie/Animation, Audio/Visual (6))
Operation of a gas chromatograph is demonstrated.
Developing the Chromatogram   
(Movie/Animation, Audio/Visual (4))
The spotted plate is placed in the chromatography tank and the chromatogram develops.
Preparation   
(Movie/Animation, Audio/Visual (4))
A chromatography chamber is prepared and the sample to be separated is spotted onto paper.
Chromatography   
(Movie/Animation, Audio/Visual (3))
Chromatographic techniques including the gas chromatography, paper chromatography, and thin layer chromatography are demonstrated.
Thin Layer Chromatography   
(Movie/Animation, Audio/Visual (3))
Techniques used in Thin Layer Chromatography are demonstrated.
Paper Chromatography   
(Movie/Animation, Audio/Visual (3))
Techniques used in paper chromatography are demonstrated.
Developing the Chromatogram   
(Movie/Animation, Audio/Visual (3))
Paper is placed in the chromatography tank and the chromatogram develops.
Identify and Interpret   
(Movie/Animation, Audio/Visual (2))
Methods to interpret the chromatogram and identify the separated spots are presented.
Preparation   
(Movie/Animation, Audio/Visual (10))
A developing chamber is prepared and the sample to be separated is spotted onto a TLC plate.
Chromatography, Thin Layer (ChemPages Lab)   
(Instructional Material (1))
Chromatography, Thin Layer: this is a resource in the collection "ChemPages Laboratory Resources". Thin layer chromatography (TLC) is a method for identifying substances and testing the purity of compounds. TLC is a useful technique because it is relatively quick and requires small quantities of material. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
Chromatography, Paper (ChemPages Lab)   
(Instructional Material (1))
Chromatography, Paper: this is a resource in the collection "ChemPages Laboratory Resources". Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires small quantities of material. The ChemPages Laboratory Resources are a set of web pages that include text, images, video, and self check questions. The topics included are those that are commonly encountered in the first-year chemistry laboratory. They have been put together for use as both a pre-laboratory preparation tool and an in-laboratory reference source.
Characteristics of Materials   
(Activity, Instructional Material (7), Test, Assessment Material (15))
What makes diapers absorbent? Is peanut butter stickier than syrup or jelly? Strong, stretchy, sticky, or sweet—everything around us has special properties which make them unique. See if you can identify and compare the characteristics of materials.
Food   
(Activity, Instructional Material (11))
ACS Science for Kids activities that explore the chemical properties of foods.