What do you mean by hardness of substance.


Experts please answer properly last answer was not given and question was closed

Dear Student,
The hardness of a substance can be defined as its resistance to deformation that can be in the form of bending, indentation.
Hardness is a measure of mechanical properties such as toughness and strength.
The hardness of a substance is measured by Rockwell Hardness Test.
Diamond is the hardest known substance.

Regards