Elements by ewghwehws

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									Elements
The Periodic Table


 Each   square shows the name and
  letter symbol for that element.
 Symbols are derived from:
  – English names.
  – Latin translations.
Element Names

   Li – Lithium
   Ca – Calcium
   O – Oxygen

   Antimony – Sb (stibium)
   Gold – Au (aurum)
   Tin – Sn (stannum)
Organization

   The vertical columns are called groups, or
    families.
   The groups are numbered 1-18 (left-right).
   Each group contains elements with similar
    chemical properties.
   The two major categories of elements are
    metals and non-metals.
Organization

   The horizontal rows of elements are called
    periods.
   Physical and chemical properties vary regularly
    across a period.
   The lanthanide and actinide series are set
    below to keep the table from being too wide.
Periodic Table Organization
Types of Elements

   Metal: An element that is a good conductor of heat and
    electricity.
   At room temperature, most metals are solid and are
    ductile and malleable.
   Mercury is a liquid at room temperature.
   The metals of Group I are soft and can be cut with a
    knife.
   Most metals have a silvery or grayish white luster.
Silver
Types of Elements

   Nonmetal: An element that is a poor conductor
    of heat and electricity.
   Many nonmetals are gases at room
    temperature.
   Bromine is a liquid at room temperature.
   The solid nonmetals are carbon, phosphorus,
    selenium, sulfur, and iodine.
   Most nonmetals are brittle.
Bromine
Types of Elements

   Metalloids: An element that has some
    characteristics of metals and nonmetals.
   A stair-step line separates the metals from
    nonmetals.
   Metalloids border this line and are solids at
    room temperature.
   They are semiconductors and are used in
    desktop computers, calculators, and digital
    watches.
Silicon
Types of Elements

   The elements in Group 18 are the noble gases.
   Noble gases are unreactive.
   Neon, argon, krypton, and xenon are all used
    in lighting.
   Helium is used in balloons because it is less
    dense than air.
Helium
Element Song

   Please listen to the following song.
   Element Song

								
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