Density

Density is a fundamental concept in physics and chemistry. It is defined as the mass of an object per unit volume. In other words, it is how much “stuff” (mass) is packed into a certain amount of space (volume). The formula for density is:

Density = mass / volume

The standard units of density are kilograms per cubic meter (kg/m^3) in the SI system. In everyday life, we often use grams per milliliter (g/mL) or grams per cubic centimeter (g/cm^3) for liquids and solids.

One important property of density is that it is an intensive property, meaning it does not depend on the amount of material present. For example, a small amount of gold will have the same density as a large amount of gold. This makes density a useful property for identifying materials.