Materials GapFill

Bulk properties are properties that relate to the material of an object, and are independent of the object's size or shape.
An example of a bulk property is  strainpressurestressdensity, which is the mass per unit volume of a material.
The bulk properties of a material determine how it reacts to compression and stretching. Materials stretch or compress linearly with force exerted, following  Einstein's lawHooke's lawNewton's lawYoung's law up to the  breaking stresslimit of proportionalitybulk limitYoung's point.
There are lots of ways to define how strong a material is. For instance, diamond is very hard (resistant to scratching) but isn't very tough (can be crushed relatively easily).
Strength can be quantified using  hardnessstresstoughnessstrain, which is the force exerted over a given area, and  strainstresstoughnesshardness, which is the ratio of the change in an object's length to its original length. The ratio of these two values is called  stresstoughnessstrengthYoung's modulus.
The maximum force an object can withstand before fracturing is its  fracture pointbreaking stressfracture limitbreaking strain.
Materials can be described qualitatively using lots of different terms:

•  PlasticityBrittlenessDurabilityElasticity is an object's tendency to not return to its original shape after being deformed
•  PlasticityDuctilityDurabilityBrittleness is an object's tendency to fracture with relatively little deformation
•  DuctilityHardnessBrittlenessElasticity is an object's ability to be stretched out into a thin wire without fracturing

Many materials will show these properties at different extensions and under different forces.