Density (volumetric mass density or specific mass) is the ratio of a substance's mass to its volume. The symbol most often used for density is ρ (the lower case Greek letter rho), although the Latin letter D …

Jan 15, 2026 · Density, mass per unit volume of a substance. The formula for density is d=M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of gram per cubic …

This lesson explains density as the physical property in chemistry that quantifies how mass is concentrated in a given volume. Gain a comfort using the formula D = m/V and explore how density …

Summary Density is defined as the mass of an object divided by its volume. Density can be used as a conversion factor between mass and volume.

In this tutorial, you will learn what density is, & how to calculate it - along with the units, formula and equation for density.

Learn about density as the relationship between mass and volume and how to calculate and compare the densities of different materials. Explore how density explains why some objects float while others …

Dec 2, 2025 · These differences in density explain everyday phenomena like floating and sinking, as well as engineering choices such as why airplanes are not built out of very dense metals.

Section Summary Density is the mass per unit volume of a substance or object. In equation form, density is defined as ρ = m V. The SI unit of density is kg/m 3.

Density is a measure of how 'heavy' a material is.

The density of gold, for example, is about 2.5 times the density of iron, which is about 2.5 times the density of aluminum. Density also reveals something about the phase of the matter and its substructure.