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.