Question

How would you describe density in terms of mass and volume?

Answer 1

Hint: The density of a substance is the relationship between the mass of a substance and how much space it takes up (volume). The mass of atoms, their size and how they are arranged determine the density of a substance. It is represented by the symbol $\delta $. It is a temperature and pressure dependent quantity.

Complete step-by-step answer:
The density $\delta $ (also known as specific mass) is defined as follows:
$\delta = \dfrac{m}{V}$
Where m is the mass of the substance in units of $g\,or\,Kg$
V is the volume of the substance in units of $c{m^{ - 3\,}}\,or\,{m^{ - 3}}\,or\,L$
Density is commonly expressed in units of $g\,c{m^{ - 3}}$. For example, the density of water is $1\,g\,c{m^{ - 3}}$and the density of earth is $5.51\,g\,c{m^{ - 3}}$. Density can also be expressed in units $Kg\,{m^{ - 3}}$. For example, the density of air is $1.2\,Kg\,{m^{ - 3}}$.

The density of solids is the highest while the density has the least value for gases. You can see that the density offers a convenient way to obtain mass of a body from its volume or vice-versa. The mass is equal to the volume multiplied by the density, while the volume is equal to the mass divided by the density. The weight of the body which is more conveniently used can be obtained by multiplying the mass with acceleration due to gravity.

Additional information:
-The expression particle density refers to the number of particles per unit volume not to the density of a single particle.
-Osmium and iridium are the densest known elements at standard conditions of temperature and pressure.

Note: It should be noted that for substances with the same volume, density will be higher for the heavier substance and for substances with the same mass, density will be higher for the substance occupying less volume, as we can see density has a direct relation with mass while indirect relation with the volume of the substance.