Oxidation States of Ions
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.
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.
Vapor pressure is the pressure exerted by molecules in the gas phase in equilibrium with a liquid or a solid. Two examples are used to illustrate vapor pressure: the drying of clothes and the evaporation of ice.
By Jill Larson
In this animated object, students are introduced to moles as a measurement.
By Barbara Liang
Chytrids, as members of this group are known, are found everywhere. In this animated learning object, students examine the role of chytrids and their impact on the environment.
Absolute Zero Temperature
By Dr. Miriam Douglass, Dr. Martin McClinton
Learners view illustrations showing the direct dependence of the volume of a gas on temperature and consider the relationship between the Kelvin and Celsius temperature scales.
Boiling Point of a Liquid
Learners examine how the boiling point increases with increasing pressure. An example from industry is given.
By Terry Bartelt
Learners view an animated presentation showing how the pH level of a cleaning solution is controlled in a closed-loop system in a manufacturing setting. A quiz completes the activity.