REVIEW!!
50
26
Fe
3
Sn
Li
Every element has specific physical properties
created from the: # Protons = Atomic #
The number of ELECTRON shells & the number
of VALENCE electrons differ for each element.
The Updateable
Periodic Table
Metal
Nonmetal
Metalloid
Metals
Nonmetals
Good Conductors
Poor Conductors
Shiny
Dull
Malleable
Brittle
Opaque
May be transparent
Ductile
Brittle
All Solid (except 4)
Solids, Liquids & Gases
Metals:
Malleable = bend without breaking
Nickel can be hammered
into thin sheets, making it
malleable
Ductile = can be made into wires
Alloy = A metal composed of more than one
element
Examples:
Brass  Cu + Zn
Sterling Silver  Ag + Cu
Steel  Fe (97%), Mg + C
Bronze  Cu + Sn
Tooth Filling  Ag + Hg
 85% of the elements are metal
 75% Earth’s crust & atmosphere
are
nonmetals!!
Liquid
Nitrogen
Metalloids = elements (6) that have both metal &
nonmetal characteristics (semiconductors).
(B, Si, Ge, As, Sb, Te)
Boron Rod
Your turn!! Color in the metals, nonmetals &
metalloids on the note sheet!
Elements are organized into
Groups (columns) & Periods (rows).
Mendeleev
Developed periodic
table based on trends &
characteristics
 Increase atomic number in horizontal rows =
PERIODS
 Elements with similar properties are lined
up in columns = GROUPS
Common Groups Names
1.Alkali Metals
• Low Density & Melting Point
• Good Conductors
Li
• React violently with water
• Soft – can be cut with knife
Na
K
Rb
Common Group Names
2.Alkali-Earth Metals
• Less reactive with water than alkali
• Harder than alkali
Common Group Names
3.Boron Family
Boron can be used to create a
distinctive green color in
fireworks.
Boron open pit, Kern Co, California, USA.
Common Group Names
4.Carbon Family
Common Group Names
5.Nitrogen Family
Common Group Names
6.Oxygen Family
Common Group Names
7.Halogens
• All nonmetals
• Form various salts
Common Group Names
8.Noble Gases
• Extremely unreactive
• Tend not to combine with other elements