density

Density

the mass per unit volume of a substance

an intensive physical property that can be used to identify a substance

D = density in grams per cubic centimeter (g/cm³)
M = mass in grams (g)
V = volume in cubic centimeters (cm³ or mL)

To use the density pyramid, merely cover up the unknown quantity and perform the necessary calculation. For instance, if the density is the unknown, cover the D and you'll see M over V. That means that in order to calculate density, you'd have to divide the mass of the substance by its volume. Conversely, if the mass is unknown, cover the M and you'll see V D. That means that in order to find the mass of a substance, you need to multiply its volume by its density.

Ex. A chunk of metal has a mass of 23.72 g and a volume of 12.3 cm³. What is the density of this substance?

cover D, you get M over V so the mass needs to be divided by its volume.....
23.72g divided by 12.3cm³ is approximately 2 g/cm³

For further information on density, check out this page: http://dbhs.wvusd.k12.ca.us/Density.html