Sometimes expressed in grams per cubic centimeter, it's mass divided by volume
Mathematically, density is defined as mass divided by volume: ... 
of a substance is occasionally called its specific volume, a term sometimes used 
in ... per cubic metre (kg/m3) and the cgs unit of gram per cubic centimetre (g/cm3
)... [DOC] [TLE] Chapter 1, section 4 [PAR] In this chapter we will consider the base units for length, mass, and temperature.