On the bench · not built yet
Balance equations by adding molecules on both sides; atoms on the scale must match.
HS-PS1-2
HS-PS1-7
Spin a 3D atom, light up its emission spectrum and wander the whole periodic table. No quiz, just curiosity.
Card game where atoms bond ionically or covalently; intermolecular forces decide which substances boil first.
Bake by the mole: scale recipes (reactions), find the limiting ingredient and maximize yield.