What is meant by density?
Answers
Answer :
Density over substance is defined as the mass of a unit volume of the substance.
The SI unit of density is kilogram per metre cube.
kg/m³
The density of a given substance under specified conditions of temperature and pressure remains the same. Therefore the density of a substance is one of its characteristic properties. In general the density of solid substances is higher than that of liquids which in turn is higher than that of gases.
The density of a given sample of a substance help us to determine its purity.
Definition :-
Density is defined as the mass per unit volume of a substance .
Formula :-
Density = mass / volume
Factors on which density depends :-
The factors upon which density depends are as follows :-
(i) The density is directly proportional to the mass of the substance.
(ii) The density is inversely proportional to the volume of the substance.
SI unit :-
The SI unit of density is kg/m³.
The density of pure water is 1000 kg/m³
The density in C.G.S unit is 1 g/cm³
Note that relative density is the comparison or ratio of the density of a certain substance to that of the density of water.
Relative density has no unit ( Don't confuse with density ) .
Some Density applications :-
(i) It is necessary for classification of substances.
(ii) It helps in research .
(iii) It helps to study the purity of a substance , and so on ........
Hope it helps !