This scatter plot compares atomic weight against specific heat capacity. A clear inverse relationship emerges - heavier elements require less energy per gram to heat.

The pattern follows from the Dulong-Petit law: since molar heat capacity is roughly constant across solids, specific heat must decrease with molar mass (Cp = 25/M J/(g·K)). Lithium with its low mass has high specific heat; uranium at the opposite extreme has very low values. This inverse relationship is fundamental for thermal design.