Dr. Miriam Douglass
Dr. Martin McClinton
Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.
Introduction to the Periodic Table
By Mona Wenrich
Students read about the basic organization and structure of the periodic table of elements. By clicking on the symbol, they can read that element's atomic number and weight. In an exercise, students identify elements as belonging to a group, a period, or neither.
Conversion Between Mass and Moles of an Element
By Dr. Miriam Douglass, Dr. Martin McClinton
Atomic weights are used to convert the mass of a sample into the number of moles of the element in the sample and vice versa. Four examples are provided for practice.
Heat of Fusion and Heat of Vaporization
By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton
Learners examine graphs and read that the heat of fusion is the heat energy absorbed by one mole of solid as it is converted to liquid, while the heat of vaporization is the heat energy absorbed by one mole of liquid as it is converted to gas.
By Jill Larson
In this animated and interactive object, learners follow two rules to write unit conversion fractions.
Creative Commons Attribution-NonCommercial 4.0 International License.
Learn more about the license »
Give your new group a name.