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"Concept Learning versus Problem Solving": Does Particle Motion Have an Effect?Michael J. Sanger, Eddie Campbell, Jeremy Felker, and Charles Spencer 210 students were asked to answer a static, particulate-level, multiple-choice question concerning gas properties. Then they viewed an animated version of the question and answered the multiple-choice question again. The distribution of responses changed significantly after students viewed the animation. Sanger, Michael J.; Campbell, Eddie; Felker, Jeremy; Spencer, Charles. J. Chem. Educ.2007, 84, 875.
Gases |
Kinetic-Molecular Theory |
Qualitative Analysis |
Quantitative Analysis |
Phases / Phase Transitions / Diagrams
Why Does a Helium-Filled Balloon "Rise"?Richard W. Ramette The article is a lighthearted, conversational exploration of the microscopic basis for Archimedes principle. The principle is discussed in terms of molecular collisions and density gradients in a gravitational field. Ramette, Richard W. J. Chem. Educ.2003, 80, 1149.
Atmospheric Chemistry |
Gases |
Kinetic-Molecular Theory |
Physical Properties
Loschmidt and the Discovery of the SmallPorterfield, William W.; Kruse, Walter Translation of J. Loschmidt's "On the Size of Air Molecules", the earliest determination from experimental data of the size of an atom (with notes). Porterfield, William W.; Kruse, Walter J. Chem. Educ.1995, 72, 870.
