~Alkaline Earth Metals~

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Alkaline Earth Metals

• Presented by
• Angel Johnson

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Types of Alkaline Earth Metals

• Beryllium ............... Be
• Magnesium ............... Mg
• Calcium ............... Ca
• Strontium ............... Sr
• Radium ............... Ra

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Beryllium

• A chemical element of atomic number 4. Beryllium
  is a hard gray metal.
• It is found in beryl, beryllium is found in the
  mineral bertrandite

• Symbols are Be

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Magnesium

• Magnesium is a ductile, silver-white, chemically
  active metal with a hexagonal close-packed
  crystalline structure.
• It is found in large deposits of magnesite,
  dolomite, and other minerals.

• Symbols are Mg

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Calcium

• It is the third most common metal on Earth,
  exceeded only by iron and aluminum, and the fifth
  most common element.
• The principle sources of calcium are limestone
  and dolomite.
• it is found in almost every terrestrial area in
  the world.

• Symbols are Ca

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Strontium

• a soft silver-white or yellowish metallic element
  that is highly reactive chemically. The metal
  turns yellow when exposed to air.
• Found deep below or in Earth's crust

• Symbol is Sr

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Radium

• Radium preparations are remarkable for
  maintaining themselves at a higher temperature
  than their surroundings, and for their
  radiations.
• Radium is only found in trace amounts in uranium
  ore. It is not a stable element, so it cannot be
  found by itself like other elements
• Symbol is Ra

• When freshly prepared, pure radium metal is
  brilliant white, but blackens when exposed to air.

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Barium

• it reacts with water and carbon dioxide and is
  not found as a mineral.
• Barium compounds impart a green color to flames
  and have been used in fireworks. Barium sulfate
  is used for its heaviness, insolubility, and
  X-ray opacity.
• Symbol is Ba

• found in the Earths crust, but not in the
  elemental form as they are so reactive. Instead,
  they are widely distributed in rock structures.

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Resources

• Picture of Beryllium found at http//www.periodict
  able.com/Elements/004/index.html
• Picture and information of Magnesium found at
  http//www.encyclopedia.com/topic/magnesium.aspx
• Picture of Calcium found at http//theodoregray.co
  m/PeriodicTable/Elements/020/index.s5.html
• Picture of Strontium found at http//jchemed.chem.
  wisc.edu/jcesoft/CCA/CCA4/MAINPT/S_elt/Sr.HTM
• Picture of Radium found at http//www.lispme.de/ps
  e/big/88_Ra_2.jpg
• Picture of Barium found at

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Resources Continued

• Information of Beryllium found at
  http//www.encyclopedia.com/doc/1O999-beryllium.ht
  ml
• Information of Calcium found at
  http//science.jrank.org/pages/221/Alkaline-Earth-
  Metals-Calcium.html
• Information of Strontium found at
  http//en.wikipedia.org/wiki/Strontium
• Information of Radium found at http//en.wikipedia
  .org/wiki/Radium
• Information of Barium found at http//en.wikipedia
  .org/wiki/Barium

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About Alkaline Earth Metals

• Alkaline Earth Metals can only be found in or
  below the earth's crust.
• The alkaline earth elements are metallic elements
  found in the second group of the periodic table.
• Because of their reactivity, the alkaline metals
  are not found free in nature.

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Using Alkaline Earth Metals Safely

• This specific group in the periodic table owes
  its name to their oxides that simply give basic
  alkaline solutions.
• These elements melt at such high temperature
  that they remain solids (earths) in fires.
• alkaline earth metals provide a good example of
  group trends in properties in the periodic table,
  with well-characterized similar behaviors down
  the group.

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Examples of Alkaline Earth Metals

• Be gt
• Mg gt

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Continued...

• Ca gt
• Sr gt

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Continued....

• Ra gt
• Ba gt