# What Is a Density?

Density is the degree of compactness of a substance. It is also a measure of the amount of information on a storage medium such as a disk or tape. The term can also be defined as the opacity of a photographic image.
Ask.com Answer for: what is a density
Density is a measure of mass per unit of volume.
The average density of an object is M/V, where M is total mass and V is total volume.
Density is a measure of the mass of a substance in a standard unit of volume. It shows how heavy something is for its size and is usually found by dividing mass by volume. Density is represented by the symbol Ï? (the Greek letter rho).
DENSITY is a physical property of matter, as each element and compound has a unique density associated with it. Density defined in a qualitative manner as the measure of the relative 'heaviness' of objects with a constant volume.
Q&A Related to "What Is a Density"
 Density is one of the physical properties of matter. In physics, it can also be expressed by the mathematical formula mass divided by the volume or D = Mass/Volume. You can find more http://answers.ask.com/Science/Other/what_is_densi...
 Density was not something that was invented, but rather something that was discovered. The Greek scientist Archimedes was the first to realize the principle of density. http://answers.ask.com/Computers/Other/who_invente...
 The density of rubbing alcohol is 0.786 g/cm^2. Rubbing alcohol is more often isopropanol mixed with water and then a little poison to denature it. http://answers.ask.com/Science/Chemistry/what_is_t...
 Styrofoam is a very light form of plastic that is quite resilient. The density of an ojbect refers to how heavy,or tightly packed the object is. Since styrofoam is light enough to http://answers.ask.com/Science/Chemistry/what_is_t...
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