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 ...

I picked up Racing Green by Kit Chapman, which I really enjoyed! So when I was interested in picking up more nonfiction, ...

We see a lot of clocks here at Hackaday, so many now that it’s hard ... this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements ...

It just has to be a hard metal. In use, Zinc is often hidden away ... as a distinct material in the west until the seventeenth century. Represented in the periodic table as Zn, zinc is a transition ...

In the modern periodic table, elements are in order of atomic number ... They have high melting points and densities, and are strong and hard. They form coloured compounds and act as catalysts.

We see a lot of clocks here at Hackaday, so many now that it’s hard ... this periodic table clock really caught our eye. [gocivici]’s idea is a simple one: light up three different elements ...

And the appearance of metals allowed solar systems to emerge from the discs of gas and dust that swirled around these new stars. A lesson guide to the periodic table “There’s now enough junk ...

This year marks the 150th anniversary of the publication of Mendeleev’s Periodic Table of Chemical Elements in 1869. In celebration, the United Nations Educational, Scientific, and Cultural ...