Periodic IQ

All 118 elements. Two simple modes — symbol & name. One quiz app that actually teaches chemistry. Free to play!

Can you name all 118 elements? Periodic IQ puts your chemistry knowledge to the test!

See a chemical symbol like Cu — pick the right element name from four choices. Or flip it around in Reverse mode: see the element name, pick the right symbol from H, He, Fe, Hg.

FEATURES: • 118 elements from Hydrogen to Oganesson • 11 IUPAC group categories — Alkali Metals, Noble Gases, Transition Metals, and more • Standard mode: symbol → name • Reverse mode: name → symbol • Bucket-aware difficulty — wrong answers come from the same chemical group, so you actually learn • Daily Challenge — one new element every day • 25 achievements to unlock — master every group and earn the Periodic Completionist badge • Dark-mode first design with a gold-on-charcoal periodic-table aesthetic • Available in 60 languages — just use your device language

Whether you're studying for an exam, teaching a class, or just curious about chemistry, Periodic IQ makes the periodic table unforgettable.

Download now and start your first reaction!