The physical states of the reactants and products in the given chemical equation are:
Zn (s) + H2SO4 (aq) = ZnSO4 (aq) + H2 (g)
Zn (s) represents solid zinc, H2SO4 (aq) represents aqueous sulfuric acid, ZnSO4 (aq) represents aqueous zinc sulfate, and H2 (g) represents gaseous hydrogen.