D. Density is the amount of matter packed into a given space.
What does density mean?
Density is a term used to describe the space occupied by an object or substance (its volume) relative to the amount of substance in the object or substance (it's mass). In other words, density is the amount of mass per unit volume. If the object is heavy and compact, it will be denser.
The density formula is the mass of an object divided by its volume. In the form of the equation, this is d = m / v. Where d is the density, m is the mass, and v is the volume of the object. The standard unit is kg / m³
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