Question
What is density of a substance? I Obtain its SI unit.
✓
Answer
The density of a substance is the ratio of its mass to volume.
The SI unit of density = the SI unit of mass the SI unit of volume $= kg / m ^3$
[Note: Density is useful in determining the purity of a substance. The CGS unit of density is $g / cm ^3$.
$1 kg / m^3=10^3 g /(100 cm)^3=10^{-3} g / cm^3$
$\left.\therefore 1 g / cm^3=1000 kg / m^3\right]$
The SI unit of density = the SI unit of mass the SI unit of volume $= kg / m ^3$
[Note: Density is useful in determining the purity of a substance. The CGS unit of density is $g / cm ^3$.
$1 kg / m^3=10^3 g /(100 cm)^3=10^{-3} g / cm^3$
$\left.\therefore 1 g / cm^3=1000 kg / m^3\right]$
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