They all have a link to the periodic table, which turned 150 in 2019 ... Make-up seems to be a running theme with these elements, as bismuth is used in cosmetics too, as a colourant.

That’s because, for the theme of its Valentine’s Day Doodle, the search engine has gone with chemistry. Or, more specifically, the periodic elements ... own 18-block table with new matches ...

Designed to engage children with a unique periodic table decoding challenge, this worksheet encourages them to solve puzzles using atomic numbers to spell out fall-themed words. Whether you’re a ...