Chapter 3-3 Metals

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Chapter 3-3 Metals
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Physical Properties of Metals

• Malleable
• can be pounded or rolled into shape.
• Ductile
• can be pulled out into a long wire.

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• Conductor
• electrons move freely, transmits heat or
  electricity.
• magnetic
• metals that are attracted to magnets and can be
  made into magnets.
• -only iron, cobalt and nickel are naturally
  magnetic

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Chemical Properties of Metals

• Metals show wide range of chemical properties
• From very reactive (Groups 1 and 2)
• Unreactive (gold and chromium)

• corrosion
• gradual wearing away of a metal element caused by
  chemical reaction.

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Alloys

• alloy
• substance made of two or more elements, at least
  one of which is a metal, that has the properties
  of metal.

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Alkali Metals

• Group 1-from lithium to francium
• Most reactive metals
• Never found uncombined (always found as
  compounds)
• Have only one valence electron
• Soft, shiny
• http//www.teachertube.com/viewVideo.php?video_id
  41344

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Alkaline Earth Metals

• Group 2- beryllium to radium
• Not as reactive as group 1
• Never found uncombined in nature
• Hard, bright white, good conductors of
  electricity
• Most common-magnesium and calcium

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Transition Metals

• Groups 3-12
• Metals in this group are very similar to each
  other
• Include familiar metals- iron, copper, silver,
  gold
• All are good conductors of electricity
• stable, react slowly or not at all with air/water

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Metals in Mixed Groups

• Groups 13-16
• Not as reactive as left side of periodic table
• Most familiar-aluminum, tin, lead