Metal, Nonmetals and Metalloids
What are the physical properties of metals?
Most elements are metals
Physical Properties Silver- grey in
color Luster (shininess) Solid at room
temperature Good conductors
of heat and electricity
chromium
Metals
Can be drawn into wire-ductile
High density-heavy for their size
High melting and boiling point
Malleable (can be hammered into thin sheets)
May be magnetic Have a characteristic
sound when struck with an object (sonorous)
potassium
What are the physical properties of nonmetals?
Exist as solids, liquids, or gases at room temperature
Do not reflect light well
Are usually brittle
Cannot be hammered flat
Cannot be drawn into wire
Generally are soft and bend or break easily
Doesn’t have a characteristic sound when struck with an object
Nonmetals
Generally have low melting points
Generally have low boiling points
Are poor conductors of heat and electricity
Low densities-light for their size
Are not magnetic
sulfur
Metalloids Physical Properties:
Solids Can be shiny or dull Can be ductile or malleable Can be brittle Conduct heat better than nonmetals, but not as
well as metals Reactivity depends on the element with which
they are reacting Melting and boiling point vary widely Density varies widely
Periodic Table
Periodic Table
The periodic table contains a zigzag line.
Elements on both sides of the line have properties of both metals and nonmetals.
Metals are located on the left side of the periodic table.
Nonmetals are located on the right side of the table