The Alkaline Earth Metals
By Michael Rollison, Kimberly
Foster, and Diane Marchunt
Beryllium
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Abbreviation: Be
Atomic Number: 4
Mass: 9.012182
Melting Point (Degrees C): 1278.5
Boiling Point (Degrees C): 2467
Density (g/cm3): 1.85
Continued Beryllium
• Interesting Facts: Beryllium is used in
specialty alloys such as spring metal in
which it increases toughness, was once
known as glucinium because of its sweet
taste which is toxic, and the chief mineral
source of beryllium is also the same
material of which emeralds are formed and
therefore creates a green metallic color.
Magnesium
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Abbreviation: Mg
Atomic Number: 12
Mass: 24.3050
Melting Point (degrees C): 649
Boiling Point (degrees C): 1090
Density (g/cm3): 1.74
Continued Magnesium
• Interesting Facts: Reacts with hot water
and acids and is used to manufacture
light-weight mechanical parts. It’s an
important nutritional element in trace
amounts.
Calcium
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Abbreviation: Ca
Atomic Number: 20
Mass: 40.078
Melting Point (degrees C): 839.2
Boiling Point (degrees C): 1484
Density (g/cm3): 1.54
Continued Calcium
• Interesting Facts: Calcium is the fifth most
abundant element in the earth’s crust, is
biologically important to the foundation of
bones and teeth, and Calcium is fairly
reactive in room temperatures and it
slowly oxidizes the air becoming encrusted
with CaO (Calcium+Oxygen) and CaCO3
(Calcium Carbonate).
Strontium
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Abbreviation: Sr
Atomic Number: 38
Mass: 87.62
Melting Point (degrees C): 769
Boiling Point (degrees C): 1384
Density (g/cm3): 2.6
Continued Strontium
• Interesting Facts: Strontium-90 is similar to
Calcium, therefore its dangerous because
it can take up the calcium spot in your
bones. Strontium is malleable, has an
extreme reaction with water to produce
Hydrogen (H) gas, and it has the same
relative abundance as Carbon and Sulfur
but doesn’t occur in a pure form.
Barium
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Abbreviation: Ba
Atomic Number: 56
Mass: 137.327
Melting Point (degrees C): 725
Boiling Point (degrees C): 1640
Density (g/cm3): 3.51
Continued Barium
• Interesting Facts: Also reacts vigorously
with water to produce Hydrogen gas (like
Strontium), is often stored in oil, doesn’t
occur in a pure form but can commonly be
found as a sulfate or carbonate, and
Barium compounds (TOXIC!!!) are also
useful in pyrotechnic devices where they
give off a green color.
Radium
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Abbreviation: Ra
Atomic Number: 88
Mass: 226
Melting Point (degrees C): 700
Boiling Point (degrees C): 1140
Density (g/cm3): 5
Continued Radium
• Interesting Facts: All radium isotopes are
radioactive and luminescent, it reacts with
oxygen and water, used to be used as a
watch dial and was also used as an early
treatment for cancer until they were
replaced with safer alternatives. Being
around radium for to long cause
irreparable damages and it was used in
paint during WWI which caused 40 deaths.
Work Cited
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http://www.3rd1000.com/elements/alkaline.htm
Textbook
http://www.qsl.net/ve3bdb/radiumpic.html
http://www.carondelet.pvt.k12.ca.us/Family/Science/AEM/Pictures/b
erylliumrock.jpg
http://z.about.com/d/chemistry/1/G/Z/_/magnesium.jpg
http://periodictable.com/Samples/038.5/s9s.JPG
http://periodictable.com/Samples/056.1/s9s.JPG
http://periodictable.com/Samples/056.1/s9s.JPG