Gram per cubic centimetre
The gram per cubic centimetre is a unit of density in International System of Units, and is commonly used in chemistry. Its official SI symbols are g/cm3, g·cm−3, or g cm−3. It is equal to the units gram per millilitre and kilogram per litre. It is defined by dividing the gram, a unit of mass, by the cubic centimetre, a unit of volume. It is a coherent unit in the CGS system, but is not a coherent unit of the SI.
The density of water is approximately 1 g/cm3, since the gram was originally defined as the mass of one cubic centimetre of water at its maximum density at approximately.