3. METALS
A substance with high electrical conductivity, luster,
and malleability, which readily loses electrons to form
positive ions (cations). Metals are otherwise defined according to
their position on the Periodic Table, including groupings as alkali
metals, alkaline earth metals, transition metals and rare earth
metals
4. PHYSICAL PROPERTIES OF METAL
HIGH THERMAL CONDUCTIVITY
HIGH ELECTRICAL CONDUCTIVITY
SONORITY
HIGH MELTING POINT
HIGH DENSITY
MALLEABILITY
DUCTILITY
STRONG AND HARD
METALLIC LUSTURE
5. Malleability is the ability of a metal to be
hammered into thin sheets. Gold and silver are
highly malleable. When a piece of hot iron is
hammered it takes the shape of a sheet.
Ductility is when a solid material stretches
under tensile stress. If ductile, a material
may be stretched into a wire.
The surface newly formed when metals are cut, has
shining appearance. This property is known as metallic
lusture.
6. Sonority is the ability of metals to produce sound
when tapped with a hard material.
Metals are good
conductors of
heat and
electricity
