How does the mass of a frozen Popsicle compare to the mass of the same Popsicle if it melted?

The mass of a frozen Popsicle and the mass of the same Popsicle after it has melted remain the same. This is because mass is conserved during the phase change from solid to liquid; the water molecules simply transition from a solid state to a liquid state. Therefore, regardless of its form, the total mass of the Popsicle does not change.