1.

Distinguish between density and relative density.

Answer»
DensityRelative density
i. Mass per unit volume of a substance is called density.i. The ratio between density of a substance and density of water is called relative density.
ii. Density = mass/volumeii. Relative density = Density of the substance/density of water at 4oC
iii. SI unit of density is Kg/m3
CGS unit of density is g/cm3		iii. Units: Relative density has no units because it is the ratio between the similar physical quantities (density).


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