Density

Real World Example

Imagine trying to pack a suitcase for a week-long vacation, fitting everything in without exceeding the airline's weight limit. This is similar to the concept of density, which is about how much mass (or stuff) is packed into a given volume (or space). Just as you try to pack more clothes into a limited suitcase space without making it too heavy, density measures how much material is packed into an object's space; a densely packed suitcase is like an object with high density, while a sparsely packed one is like an object with low density.