The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But have you ever wondered how they get those colors?

Each element in the periodic table has a unique set of wavelengths it will absorb and emit, so finding the color you want is just a matter of choosing the correct element that emits at that ...

If Mendeleev had prefered automobiles to chemicals, he might have made this periodic table of sports cars. See a full chart of cars sorted like the elements at Car and Driver.

Periodic Puzzler Help This puzzle shows many of the elements used to make transistors. The finished puzzle is a section of the periodic table, so the numbers on each tile are their atomic numbers ...

Provides an introduction to the basic concepts of chemistry through classroom discussions and demonstrations. Topics include chemical calculations, atomic structures, the periodic table, basic bonding ...

This year we celebrate the 150th anniversary of one of the most significant breakthroughs in science, the creation of a tool that allows us to make sense of the basic ingredients of our universe, and ...

If you are intimidated by the periodic table, then this introduction through the first column of elements will give you a feel for how and why the elements are arranged in this order.

Most recently, designer Alison Haigh created this minimalist periodic table, built less for understanding the nature of elements than appreciating the basic intricacies behind our natural world.