We will focus out attention on mass density.
Substances have differnt densities.
In fact the density of a substance can often be used to help idenify it. 0.001185 Human fat 0.94 Cork 0.22 - 0.26 table sugar 1.59 balsa wood 0.12 earth 5.54 An important example is water. The above table state that liquid water has a mass of 1 g in every ml. Table sugar is more dense than water by about 60 percent. Density does not depend upon size.