The density of an object or a substance is its mass, divided by its volume. We use the formula: \(density = mass ÷ volume\) to calculate the density of an object or substance. For example ...

The mass of 1 \(cm^3\) or 1 \(m^3\) of a material is called its density. The density of aluminium is 2.7 g/\(cm^3\). This means that a 1 \(cm^3\) block of aluminium has a mass of 2.7 g.

If measured in centimeters, the answer will be in cubic centimeters (cm³). Mass is measured in grams. The units for density will be g/cm³. Arrangement of atoms in different metals is similar.