Density is a fundamental physical property that describes how much mass is contained within a specific volume. It is an , meaning it remains constant for a substance regardless of the total amount present. The Core Concept Definition : The ratio of an object's mass to its volume. Formula :
Users often find the relationship between size and weight the most intuitive way to grasp the concept.
: Since density is unique to each substance at a given temperature, it is often used to identify unknown materials.
“Think of a fruit basket... The total weight of the fruits is the same, but the basket's size determines how densely packed they are.” Teach Spectacular Science quick density review
: An object will float in a fluid if its density is lower than the fluid's and sink if it is higher. Water has a defined density of 1.0 g/cm³.