The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

By comparing colors across samples, we might be able to determine the real culprit ... As part of the ChemClub's 10 th Anniversary, we asked clubs to create elements of the periodic table featuring a ...

Well it's actually quite elemental—The Periodic Table of the Elements, that is. The whiz, bang, pop, and color are all possible by combining the most basic substances of which we know ...

The finished puzzle is a section of the periodic table, so the numbers on each tile ... Another helpful clue is that the colors match vertically. There are many possible paths to the solution.

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 ...