Volume, Mass and Density
A Supplementary Activity for Students
Take a look at the two boxes below. Each box has the same volume. If each
ball has the same mass, which box would have more mass? Why? If you have a VRML browser click on
VRML and rotate the objects to get a 3D-view!
The box that has more balls has more mass per unit of volume.
This property of matter is called density. The density of a material helps to distinguish
it from other materials.
We can calculate density using the formula:
Since mass is usually expressed in grams
and volume in cm. 3, density is expressed in
In the previous sections you calculated the mass and volume of the unknown block.
Mass = 79.4 grams
Volume=29.8 cubic cm.
Find the density of the block using the above formula.
Please enter your answer in the space provided:
If another block (block II) has the same volume and a mass of 25.4 grams what would its density be?
Please enter your answer for Block II:
What is each block made
The table belows gives the density for some common materials.
Using the above table can you tell what each block is made of?