When it comes to science, chemistry is elemental. That pun is based on the fact that the main building blocks in the branch ...

When you see the periodic table, what comes to mind? The pieces on a Scrabble board? Maybe you think about your high school chemistry class. Maybe you think of the colorful table plastered on the wall ...

One hundred fifty years after Russian chemist Dmitri Mendeleev published his system for neatly arranging the elements, the periodic table it gave birth to hangs in every chemistry classroom in the ...

Arts & Entertainment Live Science crossword puzzle #5: Substance with a pH value less than 7 — 2 down Arts & Entertainment Live Science crossword puzzle #8: Lowest possible temperature in the universe ...