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Transcript
Alkaline earth metals
Alkaline earth metals (cont.)
Common Properties
All In the second row
Don’t occur as free elements
Most commonly are found occurring
as the carbonates, phosphates
silicates, and sulfates
Atoms loose 2 electrons
Most are insoluble or slightly soluble
Very Reactive
Natural Occurrences
Found in earth’s 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
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
Flame test
– Mg: White
– Ca: Dark red
– Sr: Crimson
– Ba: light green
Beryllium- Uses
Spacecraft
Aircraft
Missiles
X-rays
Magnesium- Uses
Airplanes
Missiles
Flares
Bombs
Car Engines
Medicine
Computers
Calcium- Uses
Builds Strong
bones and teeth
Used in Milk
Used to make
plaster
Uses Strontium
Flares
Uses to create
Crimson Color
Uses- Barium
Medical
Applications
Glass making
Rat poison
Making Rubber
Uses- Radium
To treat Cancer