VOCaBUlarY & PHraseOlOGY Mechanical properties brittleness ductility elasticity hardness malleability plasticity stiffness strength to deform under compression to resist abrasion to withstand forces Thermal properties melting point thermal change thermal conductivity thermal expansion copper steel cast iron wrought iron plastics ceramic biomaterial atom piezoelectric material crystalline structure rust molecule ore Electrical properties conductivity resistivity Chemical properties atomic volume corrosion resistance density Polymers elastomer molecular chain plastics polymerisation thermoplastic polymer thermosetting polymer 194 MeCHaNiCs Metals Composites alloy aluminium calcium electrical thermal conductor ferrous metal iron lustre machinability magnesium non-ferrous metal oxidation resistance platinum reactivity rust resistance silver slag sodium wear resistance cluster composite fibre matrix reinforcement Biomaterials, nanomaterials, smart materials gold metallic biomaterial chromoactive material magnetorheological material nanometre particle polymeric biomaterial prothesis ceramics