Density is defined as the mass of a given volume of a substance. Thus, density is mass divided by volume. In other words, it can be defined as the ratio of the mass to the volume of a substance. The density depends upon the amount of mass per unit volume and vice versa.
For example, if you take a sample of water and increase its volume (say by adding equal amounts of water to it), then its density will decrease because more mass is distributed over a larger volume. Therefore, if you want to increase the density, then you need to decrease its volume or increase its mass per unit area (or both).
The density value of an element depends on its atomic weight and chemical valence number; these are two factors which govern the size of atoms and thus determine how much space they occupy in their environment.
For example, when two atoms are combined chemically through bonding processes at their surfaces or within their interiors, they occupy less space than before due to their close proximity to each other.
This explains why certain elements such as carbon or oxygen have low densities compared with other elements such as gold or platinum which have high densities.
Last modified: August 11, 2022