A substance with closely-packed molecules has more:

A crucial physical characteristic of matter is density. It displays how densely the material's particles are packed. By dividing a substance's mass by its volume, the density of the substance can be determined. How much matter (mass) is present in a certain quantity of space is determined by its density (volume). The way that any substance or material is made up of microscopic particles is essentially described by its density. The particles (also known as atoms and molecules) are packed closer together the higher the density.