Density

Definition

Density is a measure of mass per unit volume. It tells us how much stuff (mass) is packed into a certain amount of space (volume).

Related terms

Mass:

Mass refers to the amount of matter in an object or substance – think about it as how many clothes you're trying to pack into your suitcase.

Volume:

As mentioned before, volume is about how much space something takes up – this would be your suitcase size in our analogy.

Specific Gravity: This term compares an object’s density to water’s density. If you've ever wondered why some things float while others sink when placed in water, specific gravity has your answer!