Element Guess

Match periodic table clues to their elements: a symbol, an atomic number or a name. A quick chemistry quiz with a daily set and practice runs.

How to play

Each question gives one clue about an element: its symbol, its atomic number or its name.
Pick the matching answer from four choices. For a name clue you pick the symbol, and for the other clues you pick the name.
Wrong picks are greyed out and counted as mistakes. The clock starts on your first tap and stops on the last answer.
Early questions use the lightest twenty elements. Later ones add iron, copper, silver, gold and other well known elements.

Learn the symbols that do not match their English names: Na for sodium, K for potassium, Fe for iron, Ag for silver, Au for gold, Pb for lead.
The first ten atomic numbers go hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon.
Noble gases sit at 2, 10, 18, 36 and 54, which helps you place the neighbours.
Finish the daily first, then use practice runs to drill the elements you miss.

Which elements are included?: Forty familiar elements, from hydrogen to uranium, including all of the first twenty and common metals such as iron, copper, silver and gold.
Why is the spelling aluminium and sulfur?: The game uses the standard international spellings, aluminium and sulfur.
Is the daily the same for everyone?: Yes. It is built from the date, so everyone gets the same questions on the same day.