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In this interactive object, learners examine how to properly dilute hydrochloric acid.
Introduction to the Periodic Table (Screencast)
By Mona Wenrich
In this screencast, students read about the basic organization and structure of the periodic table of elements. Students identify elements as belonging to a group, a period, or neither.
Balancing Oxidation-Reduction Equations
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
In this animated activity, learners examine the terms "half-reaction," "oxidizing agent," and "reducing agent" and follow five interactive examples to balance equations for oxidation-reduction reactions. Three problems are provided as a self-check.
Changes in Our World: Chemical and Physical (Screencast)
By Deb Simonson
In this screencast, learners examine the kinds of physical and chemical changes that occur in substances.
By Jill Larson
In this animated and interactive object, learners follow two rules to write unit conversion fractions.
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Give your new group a name.