Material Properties - Key Terms

Question 1

Density

Answer 1

The mass per unit of volume

Question 2

Fusibility

Answer 2

The ability to change into a liquid when heated to a particular temperature - the melting point

Question 3

Conductivity

Answer 3

The ability to conduct electrical current or heat

Question 4

Thermal expansion

Answer 4

The amount that a material expands when heated

Question 5

Strength

Answer 5

The ability to withstand force without breaking or permanently deforming

Question 6

Elasticity

Answer 6

The ability to bend and flex when subjected to a force and then return to its original form when the force is removed

Question 7

Plasticity

Answer 7

The ability to be changed permanently in shape (deformed) by the application of an external force without breaking or fracture

Question 8

Malleability

Answer 8

The ability to be changed permanently in shape (deformed) by the application of compressive force without breaking or fracture

Question 9

Ductility

Answer 9

The ability to be changed permanently in shape (deformed) by the application of tensile force without breaking or fracture

Question 10

Hardness

Answer 10

The ability to resist abrasive wear, indentation and deformation

Question 11

Toughness

Answer 11

The ability to withstand sudden stress in the forms of shocks or blows without fracturing

Question 12

Durability

Answer 12

The ability to withstand wear, tear and deterioration over time

Question 13

Stability

Answer 13

The ability to resist changes in shape and size over time