Elements and Their Properties Metals

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Elements and Their Properties Metals

• Chapter 19
• Section 1

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What are the 3 main groups that elements can be
classified into?

• Metals
• Nonmetals
• Metalloids

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Metals

• Properties
• Good conductors of heat and electricity
• Solid at room temperature
• (except mercury)
• Luster ? Reflect light
• Malleable ? Hammered/rolled into sheets
• Ductile ? Drawn into wires

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Alkali Metals

• Group 1
• Softer than most metals
• Most reactive metals
• 1 Valence electron
• Combine readily with other elements
• Dont occur in nature in elemental form

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Alkali Metals Uses

• Potassium and Sodium ? Health
• Lithium ? Treats Bipolar depression
• Francium ? Radioactive element found in uranium
  minerals

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Alkaline Earth Metals

• Group 2
• Combine readily with other elements
• 2 Valence electrons

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Alkaline Earth Metals Uses

• Magnesium and Strontium ? Fireworks
• Magnesium ? Cars, planes, spacecraft
• Calcium ? Bones
• Barium ? Used with X-rays
• Radium ? Radioactive, previously used to treat
  cancer

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Transition Elements

• Groups 3-12
• Found in nature as uncombined elements

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Transition Metals Uses

• Iron, Cobalt, Nickel ? Steel
• Copper, Silver, Gold ? Coins, Jewelry, Wiring
• Zinc, Cadmium, Mercury ? Protective Coatings,
  Batteries, Thermometers

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Inner Transition Metals

• Lanthanides
• Atomic Numbers 58-71
• Used in the Motion Picture Industry and TV
• Actinides
• Atomic Numbers 90-103
• Radioactive and Unstable (Uranium)