Alkaline Earth Metals

1
Alkaline Earth Metals

• Jackie, John, Tyler, Chris

2
Alkaline Earth Metal Elements
3
Elements Continued
4
Similar Properties

• All In the second row
• Dont occur as free elements
• Most commonly are found occurring as the
  carbonates, phosphates silicates, and sulfates
• Flame test can be used to determine if the
  element is an Alkaline Metal

• Atoms loose 2 electrons
• Most are insoluble or slightly soluble
• Very Reactive

5
Chemical Properties

• All but Beryllium form oxides at room temperature
• Magnesium reduces carbon dioxide
• Strontium, Calcium, barium when put in water
  react to form hydroxides

6
Physical Properties

• Have higher melting points, are harder and are
  more dense than Potassium and Sodium
• When put in flame
• MgWhite
• CaDark red
• Sr Crimson
• Ba light green

• 2 valence electrons
• Metallic and Ductile
• Shiny silvery white
• Malleable

7
Natural Occurrences

• Found in earths crust
• Rock Structures
• Magnesium is found in Carmelite, magnetite and
  dolomite. Extracted from sea water
• Calcium is found in found in chalk, limestone,
  gypsum and anhydrite

8
Uses- Strontium

• Fireworks
• Flares
• To create a crimson Color

9
Uses- Radium

• Treating Cancer

10
Uses- Barium

• Medical Applications
• Glass making
• Rat poison
• Making Rubber

11
Magnesium- Uses

• Airplanes
• Missiles
• Flares
• Bombs
• Car Engines
• Medicine
• Computers

12
Calcium- Uses

• Builds Strong bones and teeth
• Used in Milk
• Used to make plaster

13
Beryllium- Uses

• Spacecraft
• Aircraft
• Missiles
• X-rays

14
Quiz

• 1.) Choose Two characteristics of Alkaline Earth
  Metals
• A. Have a silvery luster C. Glow yellow in the
  dark
• B. Are Ductile D. Are not Malleable
• 2.) Two of the six metals in this group are
• Magnesium C. Gold
• Argon D. Radium

15
Quiz Continued

• 3.) A flare is made out of what element in this
  group?
• Magnesium C. Radium
• Calcium D. Beryllium
• 4.) What can you make from Alkaline Earth Metals?
• Paper C. Fireworks
• Mold D. Plastic

16
Last Question!

• 5.)What test can be used to identify three of the
  six alkaline earth metals?
• Gold foil test C. Density test
• Flame test D. Boiling test