 # Difference between Mass and Density When it comes to mass and density, there is a lot of confusion about the two terms. Mass is the amount of matter in an object, while density is the measurement of how much matter is packed into a given volume. In other words, density is mass per unit volume. This can be a little confusing, so let’s take a look at an example.

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## What is Mass?

Mass is a measure of the amount of matter in an object. It is usually measured in grams or kilograms. The mass of an object is not the same as its weight, which is a measure of the force of gravity on the object. Mass is constant, while weight can change depending on the strength of gravity. For example, a person has the same mass on Earth as they do on the Moon, but their weight would be less on the Moon because the gravitational force is weaker there. Mass is also different from volume, which is a measure of the amount of space an object takes up. An object with a large mass can have a small volume, like a rock, or a large volume, like a balloon filled with air.

## What is Density?

Density is a measure of how much mass an object has in a given volume. The formula for density is D=M/V, where D is density, M is mass, and V is volume. Density is often represented by the symbol rho (ρ). The SI unit for density is kg/m^3. Density varies widely among different substances; for example, the densities of water and air are very different. Density also varies among different states of matter; for example, solids are usually denser than liquids, which are usually denser than gases. Density can be affected by temperature and pressure; for example, gases are usually less dense at high temperatures and high pressures. Density can be used to calculate the mass of an object if the volume is known or vice versa. It can also be used to calculate the buoyancy force on an object submerged in a fluid.

## Difference between Mass and Density

Mass and density are two important properties of matter. Mass is a measure of the amount of matter in an object, while density is a measure of how compact the mass is. Mass is measured in units of grams (g), while density is measured in units of grams per cubic centimeter (g/cm3).

To calculate the density of an object, you divide its mass by its volume. An object with a high density is very heavy for its size, while an object with a low density is very light for its size. The densities of all objects are compared to the density of water, which has a density of 1 g/cm3. Objects with densities less than 1 g/cm3 will float on water, while objects with densities greater than 1 g/cm3 will sink.

## Conclusion

Density is mass per unit volume. Mass is the amount of matter in an object and density is a measure of how closely packed the molecules are in an object. The more densely packed the molecules, the higher the density. When you are dealing with liquids or gases, it can be difficult to determine density because the molecules are constantly moving around. In solids, however, the atoms are held together tightly and so density can be easily measured. There are many applications for understanding mass and density.