What is density defined as?

Density is defined as the relationship between mass and volume, specifically calculated by dividing mass by volume. This measurement provides insight into how much matter exists within a given space. When a substance has a higher density, it means it has more mass packed into each unit of volume, which can affect its buoyancy, stability, and behavior in various environments.

Understanding density is crucial in fields such as engineering, physics, and material science because it influences how materials are utilized and interact with one another. For example, whether an object will float or sink in a fluid is determined by a comparison of its density to that of the fluid.