Periodic Table Trivia
Test your mettle with elements—from gallium’s quirky melt to helium’s party float—if you can handle the periodic punch, you’re a real element pro.
EXAMPLE QUESTIONS
In classroom demos, sodium and potassium are famously soft—what everyday tool can slice them?
Knife
Low-pressure sodium streetlights are prized for cutting through which adverse weather, thanks to their monochromatic yellow light?
Fog
Mendeleev arranged by atomic weight; after Henry Moseley’s 1913 X-ray work, the modern table orders elements by increasing what?
Atomic number
In 1944, Glenn Seaborg proposed a new f-block series, analogous to the lanthanides, spanning elements 89 to 103. Name that series.
Actinides
The element with symbol I sublimes from a gray-black solid into a striking what-color gas when gently heated?
Violet