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
Which element is most commonly used to disinfect municipal drinking water worldwide?
Chlorine
Mendeleev arranged by atomic weight; after Henry Moseley’s 1913 X-ray work, the modern table orders elements by increasing what?
Atomic number
Which metalloid—once used in ancient Egyptian kohl and later in flame retardants—has the chemical symbol Sb?
Antimony
Which qualitative hardness scale rates materials by scratch resistance, with talc at 1 and diamond at 10?
Mohs scale