The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

The zigzag, staircase, line in the diagram of the periodic table above separates ... Hydrogen is a non-metal, but it is often put in the middle. Notice that most elements are metals, rather ...

There are currently 118 known elements on the periodic table, and we've put 20 of them below to create a brain game that ...

Bismuth, the 83rd element in the periodic table, has been known since ancient times, but was often confused with lead and tin. In 1753, Claude François Geoffroy from France demonstrated that ...

Can France claim the first periodic table? Probably not, but a French Geology Professor made ... For example, a reactive non-metal was directly followed by a very reactive light metal and then a less ...

It has been estimated that at any one time there is less than a kilogram of the element in the entire earth's crust. What's more, to the surprise of most chemists and going against the well-known ...

Spraying Windex onto the samples produces a color that depends on the metal residing in the dirt. By comparing colors across samples ... As part of the ChemClub's 10 th Anniversary, we asked clubs to ...