At room temperature, oxygen reacts with the surface of the metal. This forms a white oxide, which covers the surface. The metal below the surface does not react.

Since this atom has a total of eight electrons, it also has eight protons. The atom with eight protons in its nucleus (atomic number 8) is oxygen. Each energy level holds a certain number of electrons ...

That’s why this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements with three different colors for hours, minutes, and seconds ...

John Sutton described his client as an “innocent collector” and “science nerd”, claiming Lidden “did not import or possess ...

Download an Updated Periodic Table from ACS Publications Is the periodic table hanging in your lab ... Chemical Landmark Lesson Plan: Discovery of Oxygen Discover how chemistry was practiced during ...

You interact with about two-thirds of the elements of the periodic table every day. Some, like carbon, oxygen, and nitrogen, make up our bodies and the air we breathe. Yet there is also a class of ...

For the last fifty or so years, the periodic table has been incomplete. Elements after uranium on the periodic table have been synthesized for the past few decades, but there were always a few ...

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

In an oxygen (O2) molecule, both atoms have the same electronegativity ... which is very practical and accurately reproduces both molecules' energies and chemical reactions. The periodic table's most ...