[Verse 1] There's a map across the classroom wall, An address for each element, a place to find them all. Atomic number gives the proton count; Symbol, name, average mass—read what each part's about. Periods run across; groups go down. Same-group main-group elements share outer-count patterns. Those valence electrons help explain Why their chemical behavior often looks the same. [Chorus] Find my row, find my column, Read the tile before you call it. Every number has a reason; Know which question you are asking. [Verse 2] Group one: alkali metals, hydrogen excepted. Group two: alkaline earths, another family connected. Seventeen: halogens; eighteen: noble gases. Metals mostly left and center; nonmetals mostly right. Metalloids near the stair-step boundary line; Hydrogen's a nonmetal on the left-hand side. Average mass reflects isotopes and how common they are; It isn't one atom's proton-neutron sum on that card. [Final Chorus] Find my row, find my column, Read the tile before you call it. Every number has a reason; Know which question you are asking.
