This essay, written for Teachers' Domain, describes the foresight and pattern recognition that Russian chemist Dmitri Mendeleyev used to develop the modern periodic table of elements.

This interactive periodic table developed for Teachers' Domain provides detailed information about the chemical properties of elements and illustrates the electron configurations that determine those characteristics.

Describes the organization of the periodic table of elements and the different groups in it.

Provides two printable periodic tables, color-coded to show the element groups. One table gives masses, the other gives charges.

Describes the Octet Rule as it pertains to the Groups 1-7 on the Periodic Table of Elements. It also provides a Sideways Periodic Chart With Electron Shell Numbers.

This lesson focuses on predicting chemical reactions using The Group 1 elements in the Periodic Table are known as the alkali metals. They include lithium, sodium and potassium, which all react vigorously with air and water. It provides...

This lesson explains many basic concepts of atomic structure. It starts with atomic mass and number and then works up to more sophisticated information on electron configuration and how each element fits into the Periodic Table.

Students can use this chemistry tutorial to further their understanding of the families of elements on the Periodic Table of Elements.

The uses of each of the five chalcogens, i.e., the oxygen family of elements, are described.

Read about the non-metallic elements in the halogen family, what their chemical and physical properties are, their uses, and some interesting facts about them.

Kids learn about the post-transition, poor, and other metals of the periodic table. Which elements are in this group. Properties, similarities, and other facts.

Kids learn about the nonmetals of the periodic table. Which elements are in this group. Properties, similarities, and other facts are found on this site.

Looks at the chemical and physical properties of halogens.

Learn about the characteristics, chemical and physical properties, and uses of halogens.