Questions: modulus of elasticity is a structure insensitive property [it is a unique property of a material- it is a property of the atomic bond in the material, and can not be altered by changing chemical composition or of a material] [this therefore means stiffness is structure property]

Solution Steps

The question discusses the modulus of elasticity, which is a material property related to the atomic bonds within the material. It is stated that this property is insensitive to the structure of the material.

The first blank should be filled with a term that indicates a property that cannot be changed by altering the material's structure. The second blank should be filled with a term that indicates the insensitivity of stiffness to the material's structure.

• The modulus of elasticity is not affected by the "microstructure" of the material.
• Therefore, stiffness is a structure "insensitive" property.

Final Answer