In this interactive object, the learner practices identifying charges on ions.
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.
Learners read the definition of atomic weight and obtain the weights of elements by viewing the Periodic Table and charts that list atomic weights by name or symbol.
Changes in Our World: Chemical and Physical (Video)
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 object, students are introduced to moles as a measurement.
Using an Indicator
By Janet Braun, Barbara Anderegg
Students read about the basics of using an indicator.
Deriving the Formulas of the Power Wheel
By Ron Wallberg
Use Ohm's law, Watt's law, and the power equation to derive formulas for the DC power wheel.
The Difference Between -(6)Squared and (-6)Squared
By Arlene Smith
In this learning activity you'll calculate problems using the negative both inside and outside of the parenthesis.
Multiplying and Dividing Signed Numbers
By Mona Wenrich
Students read the rules used in multiplying and dividing signed numbers. They view examples and work practice problems.
Multiplication of a String of Signed Numbers
Students read how to organize their work when multiplying more than two signed numbers. A review and practice problems complete the activity.
This game requires students to solve equations in order to reach the honeypot.
Basics and formulas for Spreadsheets
Variables On Both Sides of the Equation
This game has students practicing with equations that have variables on both sides of the equation.
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