Final answer:
Density is calculated by dividing the mass of a substance by its volume, often using the formula d=m/V. For a cube, its volume is obtained by cubing the edge length and is used together with its mass to calculate its density.
Step-by-step explanation:
Density is a measurement that defines how much mass of a substance is contained in a given volume. The density of a substance can be derived by applying the formula where density (d) is equal to mass (m) divided by volume (V). If you have a cube, for example, and you want to calculate its density, first you need to measure its mass, and then calculate its volume by cubing the edge length. Once you have both the mass and the volume, you divide the mass by the volume to find the density.
In a more practical sense, if you have a sample of iron with a mass of 23.4 grams and a volume of 3.00 cm³, you calculate the density by dividing 23.4 grams by 3.00 cm³, which would be 7.8 grams per cm³. This ratio or fraction is the mass-to-volume ratio, and it is a fundamental concept in understanding the physical properties of substances.