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Dr. Miriam Douglass
Dr. Martin McClinton
The definition of an isotope is illustrated using the three isotopes of carbon. The three isotopes of hydrogen are discussed as exceptions.
A Biological Example of Water Solubility
By Jill Larson
In this animated object, students examine the role that the solubility of water plays in various biological functions.
Ideal Gas Law
By Dr. Miriam Douglass, Dr. Martin McClinton
In this interactive object, learners use the ideal gas law to solve a practice problem.
Melting Point and Freezing Point
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners observe that the melting of a solid and the freezing of its liquid occur at the same temperature. The melting point is an intrinsic property and is used to identify a substance.
Introduction to the Periodic Table
By Mona Wenrich
Students read about the basic organization and structure of the periodic table of elements. By clicking on the symbol, they can read that element's atomic number and weight. In an exercise, students identify elements as belonging to a group, a period, or neither.
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