Final answer:
Two physical properties associated with metals are high electrical conductivity, due to the sea of delocalized electrons, and malleability, which allows metals to deform without breaking. These properties reflect the unique metallic bonding in metals.
Step-by-step explanation:
Physical Properties of Metals
Two physical properties associated with metals are high electrical conductivity and malleability. At the atomic level, metals have free-flowing electrons in a 'sea' of delocalized electrons around a lattice of positive metal ions. These free electrons allow metals to conduct electricity very well; as electrons enter one end of a piece of metal, an equal number flows out from the other end, enabling the flow of electrical current. The high electrical conductivity is due to the metal's ability to easily absorb and emit energy.
Malleability, the ability of a metal to be hammered or rolled into thin sheets, is due to the metallic bonding that allows metal atoms to slide past one another without breaking the bond. This lets the metal change shape instead of shattering. The malleable nature of metals means they can deform under pressure, which is a key property for uses in construction and manufacturing.