In 1869, Russian scientist Dmitri Mendeleev created the Periodic Table, ordering the naturally occurring elements by their structure and properties. His Periodic Table changed the course of Chemistry forever, and even predicted the...

When Mendeleev created the Periodic Table in 1869, he also predicted the existence of elements yet to be discovered, including gallium. What are the properties of this rare metal and why was its discovery so important? Chemistry -...

What does the Periodic Table tell us about the elements, their properties and behaviours? And why does the atomic number define each element? Chemistry - Periodic Table - Learning Points. The structure of the atom reveals why the...

This program makes the Modern Periodic Table come alive to students. Numerous real-life examples of elements are exemplified in the table. Animations and graphics illustrate concepts not easily achieved through other instructional...