Will give brainliest to correct answer one way to identify a substance is to compare the density of the substance with the density of a known substance. suppose a cube of a gold-colored metal with a volume of 58 cm3 has a mass of 979 g. the density of pure gold is known to be 19.3 g/cm3. based on this information, could the metal be pure gold? a. no. the density is more than pure gold. b. no. the density is less than pure gold. c. yes. the density equals that of pure gold.