**What is Density? **

Density is the ratio of an object’s mass to volume. Density is a calculated value and not a measured value.

**How to Calculate Density:**

Mass is the quantity of matter. (SI Unit of mass is Kg)

Volume is the amount of space something occupies. (SI unit is m ^{3} )

**Example**

A block of wood weighs 5 Kg and has a volume of 0.5 m ^{3} . What is the density of the of wood.