Dr. Martin McClinton
Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.
The Limiting Reagent in Chemical Reactions
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
In this interactive object, learners determine the limiting reagent and the excess reagent in chemical reactions. Learners test their knowledge by solving three problems.
Learners examine phase diagrams that show the phases of solid, liquid, and gas as well as the triple point and critical point.
Gas Volume vs. Pressure (Boyle's Law)
By Dr. Miriam Douglass, Dr. Martin McClinton
Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.
By Jill Larson
In this interactive object, the learner examines how pressure and volume relate to each other.
The Peptide Bond
By Eileen Bouchard
In this animated object, learners examine the properties of the peptide bond and how the bond relates to the structure of hair.
Changes in Our World: Chemical and Physical
By Laurie Jarvis, Deb Simonson
In this animated object, learners examine the kinds of physical and chemical changes that occur in substances. They practice identifying examples of each.
The Disulfide Bond
In this animated lesson, learners read about the disulfide bond, the second strongest chemical bond in the hair. This bond can only be altered by chemicals.
Endothermic vs. Exothermic Reactions
By Terry Bartelt
In this animated object, learners examine how the heating or cooling steps in a manufacturing process work to control a chemical reaction.
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.
Science Final Review
Choose the correct word or definition of the terms.
Element Symbol Practice
Element Symbols 1-20
Science Lab Equipment - Part 1
Test your recognition of science lab equipment
What is the name of the ion PO5?
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