The unit of density is:
Kilograms per cubic centimeter.
We know that the density of a substance is defined as the ratio of the mass of a substance to it's volume.
i.e.
[tex]\text{Density}=\dfrac{\text{Mass}}{\text{Volume}}[/tex]
Now, we know that the standard unit of the mass of a substance is: Kilograms(kg)
and the standard unit for a volume is: cubic centimeters(cm³)
Hence, we will get the unit for density as:
Kilograms per cubic centimeter