The modern periodic table is basic to the sciences and is so familiar that popular songs have even been written about it. But perhaps surprisingly, even many professional chemists don't know much ...

The periodic table is a chart that organizes all the known elements, like a giant puzzle that helps scientists understand how elements behave. The periodic table was first created by Dmitri Mendeleev ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Editor's note: The following is a text-only version. The complete version with artwork is available for purchase here (PDF). The periodic table of the elements is one of the most powerful icons in ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...