Dr. Miriam Douglass
Dr. Martin McClinton
Learners examine how melting, vaporization, and sublimation require energy input while freezing and condensation release energy.
Standard Molar Volume
By Dr. Miriam Douglass
Learners observe that the volume of one mole of any gas is 22.4 L at standard temperature and pressure. An illustration shows that only the mass of the molar volume differs with the identity of the gas.
The Structure of an Atom
By Jill Larson
Students examine atomic structure and the octet rule.
In this interactive object, the learner examines how pressure and volume relate to each other.
Percent Composition of Compounds
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners examine the method used to calculate the mass percent of an element in a compound. Three examples and one problem illustrate the method.
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