Alkaline Earth Metals By: Matt Case, Davis Todd, CC Smith, Diamond Henderson, and Travis Monet.
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Transcript of Alkaline Earth Metals By: Matt Case, Davis Todd, CC Smith, Diamond Henderson, and Travis Monet.
Alkaline Earth Metals
By: Matt Case, Davis Todd, CC Smith, Diamond Henderson, and
Travis Monet
• Parents: Louis-Nicholas Vauquelin
• Birth Date: Discovered in 1798
• Gender: Metal
• Color: steel gray
Physical Descriptions:
• # of Protons:4
• # of Electrons:4
• # of Neutrons: 5
• Density: 293 K: 1.848 g/cm3
• Boiling point: 2742 K (2469 Celsius)
• Melting point: 1551.2 K (1278 Celsius)
• Specific heat capacity: 1.82 J g-1 K-1
• Electrical conductivity: 0.25 x 106
S cm-1
Chemical Description
• Valance #:2
• Ion: Be +2
• Oxidation #: Minimum- 0, Maximum- 2
Harmful effects: Beryllium and its salts are
both toxic and carcinogenic.
Uses:
Beryllium alloys are used in the aerospace industry as light-weight materials for high performance aircraft, satellites and spacecraft
Compounds
• Oxide(s): BeO3 • Chloride(s): BeCl2• Hydride(s): BeH2
Reactions• Reaction with air: vigourous, w/ht
BeO, Be3N2
• Reaction with 6 M HCl: mild H2
• Reaction with 15 M HNO3: none
• Reaction with 6 M NaOH: mild
H2, [Be(OH)4]2
Magnesium!
• Magnesium was first discovered by Joseph Black, in 1755
• Magnesium and calcium were thought to be the same element
• Magnesium is a Alkaline Earth Metal, and silvery-gray in color.
Magnesium!
• Magnesium has 12 protons, neutrons, and electrons. Its density is 1.738 g/cm3.
• Magnesium reacts with hydrogen to produce hydrogen gas.
• Since it is 2/3 of aluminum's density, alloys of magnesium are used in the construction of cars, missiles, and airplanes.
Magnesium!
• Magnesium is highly combustible, and when lit produces a brilliant white light. Thus it is often used in fireworks or flares.
• Magnesium also has stool softening qualities, and is used in medications such as “Milk of Magnesia” for self-regulation.
Calcium aka Ca
“My name is Humphry Davy and I discovered Calcium in 1808!”
“I was born in London”
And learned from my father that I have metal ruining all through me!
“I was born weighing a heavy 1.55 g/cm
Davy tells me when I’m really mad I get so hot, he said my boiling point is 1771 K and then when I calm down I get to 1115 K.
3
Different Sides“Students can draw me in different forms, but I’m still Calcium”
“There’s 20 Protons, Neutrons, and Electrons that create me”
“I only have 2 for my valence and oxidation #!”
Other Compounds:
-CaO
-CaCl
-CaH22
I’m very reactive and like to give my electrons to others
I’m Good/Bad
“I’m good when used to make other metals to make Uranium and Thorium”
“And I’m very important when it comes to Portland and it’s cement!!!”
Bad things?? There’s nothing bad about me
Electrical conductivity: 0.313 x 10 s cm
6-1
Thermal conductivity:
201 W m K -1-1
WEbsiTe(S)
Radium
http://www.chemicool.com/elements/radium.html#general
Barium
http://www.chemicool.com/elements.barium.html
Calcium
http://www.chemicool.com/elements/calcium.html
Magnesium
http://www.chemicool.com/elements/magnesium.html
Strontium
http://www.chemicool.com/elements/strontium.html
Beryllium
http://www.chemicool.com/elements/beryllium.html
Strontium
• Strontium was born in Scotland in 1790 by Adair Crawford. He is a metal and has a lot of cousins. It is a metal
Strontium
• He has 38 protons and electrons with 50 neutrons.
Strontium
Boiling point is 1384.0 °C
Its melting point is 769.0 °C
Strontium
A soft, silvery metal that burns in air and reacts with water.
Strontium
It is often used in fireworks and flares and also helps heal bones
Radium
• Was discovered in 1898 by Marie S. Curie and her husband Pierre.
Radium
Is a metal!And its belongs to the Alkali
Earth Metals
Radium
• Density: 5.5g/cc @ 300K• Boiling Point:1500*C
• Melting Point: 700*CSpecific Heat Capacity: o.12Jg^-1 K^-1
• Heat of fusion: 8.5kJ mol^-1
Radium
• valence # 2• oxidation number: +2• Highly reactive
Radium
• Can be used as a chemical that glows in the dark
Radium
• Is highly radioactive and can be very harful if exploded.
Barium
• Barium was discovered by Sir Humphrey Davy in 1808 in London
Barium
• Metal • And is an Alkali Earth Metal.
Barium
Barium
• Density: 3.59 g/cm^3 • Melting point: 725*C• Boiling point:1897*C
Barium
• Valacne electrons 2• OXD # +2 • Highly recative.
Barium
• Can be used to remove gases form tubes.
Barium
• Can be very reactive. • And can be highly poisonous.