Question

Define the term density of a substance.

Answer 1

Hint:Go through the concept of density of the substance. The density of a substance defines how dense the substance is. Hence, given the definition of density of any substance and also give the mathematical equation for the density of the substance in terms of its mass and volume.

Complete answer:
The density of a substance gives the information about the denseness of the substance.The ratio of mass of the substance to volume of the substance is called density of the substance.
The mathematical equation for density is written as
\[\rho = \dfrac{M}{V}\]
Here, \[\rho \] is the density of the substance, \[M\] is the mass of the substance and \[V\] is the volume of the substance.

Additional information:
The density of a substance depends on how tightly the atoms of the substance are held together.Hence, the density of the solids is greater than liquids and density of liquids is greater than gas as the arrangement of atoms in the solids is more compact than liquid and gases.

The density of a substance depends on mass and volume of the substance.As the temperature of the substance is increased, the volume of the substance increases and the density decreases.As the pressure on the substance is increased, the volume of the substance decreases and density increases.The unit of density is kilogram per meter cube (\[{\text{kg}} \cdot {{\text{m}}^{{\text{ - 3}}}}\]).

Note: One can also define the density of the substance as mass per unit volume of the substance. His mass per unit volume for a particular substance remains the same throughout its volume and changes only if the mass or volume of the substance changes as the term mass per unit volume changes.