Final answer:
Density is a characteristic physical property of a pure substance. It is defined as the mass of the substance divided by its volume. Density is constant for a substance and does not depend on the sample size.
Step-by-step explanation:
Density is a characteristic physical property of a pure substance. It is defined as the mass of the substance divided by its volume. Density is an intensive property, meaning it is inherent to the substance and does not depend on the sample size.
For example, the density of tungsten is always 19.25 grams per cubic centimeter, regardless of the sample size. To calculate density, you divide the mass of the substance by its volume.