Life itself depends on a core group of about a dozen elements – such as carbon, hydrogen, oxygen and nitrogen – along with ...

A new version of the periodic table showcases the predicted properties of 2-D metals, an obscure class of synthetic materials. Arrayed in 1-atom-thick sheets, most of these 2-D metals have yet to be ...

How far into the periodic table could you get? Would you be breaking any laws? At what point would your periodic table start ...

For now, they're known by working names, like ununseptium and ununtrium — two of the four new chemical elements whose discovery has been officially verified. The elements with atomic numbers 113, 115, ...

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 ...

The news broke that a railroad car, loaded with pure sodium, had just derailed and was spilling its contents. A television reporter called me for an explanation of why firefighters were not allowed to ...

This year (2019) we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the ...