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