Density is an intensive physical property obtained by dividing the mass of a material or object by its volume (i.e., mass per unit volume).Should a mass or its constituent volume be misread, this affects the density calculation.Density= Mass (m) / Volume (V) The SI base unit of mass and volume are kilograms and cubic meters, re- spectively, but chemists generally express mass in grams and volume in cubic centimeters or milliliters.The most commonly encountered density unit, then, is grams per cubic centimeter (g/cm3), or the identical grams per milliliter(g/ ml).