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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.
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
In this well-illustrated activity, learners examine the three types of intermolecular forces: dipole-dipole forces, London or Van der Waals forces, and the hydrogen bond. Two interactive questions are included.
Learners examine the meaning of oxidation, reduction, and half-reaction, and watch a film showing the deposition of copper metal from the reduction of copper (II) ion by aluminum. A brief quiz completes the activity.
How Pressure Changes Boiling Temperature
By Terry Bartelt, Terry Fleischman
Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.
Science Lab Equipment - Pt 1 (Screencast)
By Bruce Bell
In this screencast we are introduced to the lab equipment used to contain and dispense chemicals.
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