November 1 2010 - Density

A materials density is defined as its mass per unit volume.  It is, essentially, a measurement of how tightly matter is compacted together.  

To calculate the density of an object, you take the mass and divide it by the volume.  The equation will look like this : P=M/V  where P is the Density, M is the mass and V is the volume. 

The unit for solids are g/Cm³ and the unit for liquids are g/mL

1 Cm³ of water = 1mL

The density of water is 1.0g/mL or 1000g/L

If the density of an object is greater than the density of a liquid, then it will sink

If the density of an object is less than the density of a liquid, then it will float.

=) DENSITY VIDEO!!!!!!!!!