Alkali-Earth Metals Family Album

Alkali-Earth Metals Family Alkali-Earth Metals Family AlbumAlbum

Created by:Created by: Hilton Chapman Hilton Chapman Nelson MacDonald (Uncle Peaches)Nelson MacDonald (Uncle Peaches) Shanquel SpellmanShanquel Spellman Taylor MartinTaylor Martin

Alkali-Earth Metals Alkali-Earth Metals

1. Be- Beryllium 1. Be- Beryllium 2. Mg- Magnesium 2. Mg- Magnesium 3. Ca- Calcium3. Ca- Calcium 4. Sr- Strontium4. Sr- Strontium 5. Ba- Barium5. Ba- Barium 6. Ra- Radium 6. Ra- Radium

Location on Periodic Location on Periodic TableTable

Group 2; Periods 2-7Group 2; Periods 2-7

Common Family Common Family CharacteristicsCharacteristics

Good Conductors Good Conductors Shiny Shiny High Melting PointsHigh Melting Points High Boiling PointsHigh Boiling Points Tend to lose electrons Tend to lose electrons

Beryllium Beryllium

Background Info Background Info

Parent: French chemist Louis-Parent: French chemist Louis-Nicolas Vauquelin (1763-1829) Nicolas Vauquelin (1763-1829)

Birthplace: Paris FranceBirthplace: Paris France Date: 1798Date: 1798 Gender: MetalGender: Metal

Physical DescriptionPhysical Description

Physical Description-Physical Description-

Physical Description-Physical Description-

Chemical Description Chemical Description

Valence eˉ- 2Valence eˉ- 2 Oxidation #- 2Oxidation #- 2 Beryllium has a strong resistant Beryllium has a strong resistant

layer of oxide on its surface which layer of oxide on its surface which lowers its reactivity.lowers its reactivity.

Aluminum-Silicon-FluorineAluminum-Silicon-Fluorine

Positives usesPositives uses

1. aircraft, satellites and spacecraft- 1. aircraft, satellites and spacecraft- Light weight Material Light weight Material

2. Nuclear reactors as a reflector 2. Nuclear reactors as a reflector and absorber of neutrons, a shield and absorber of neutrons, a shield and a moderator and a moderator

Negative effects Negative effects

1. Beryllium and its salts are both 1. Beryllium and its salts are both toxic and carcinogenic. toxic and carcinogenic.

2.Chronic Problems2.Chronic Problems

Magnesium Magnesium

Background Info Background Info

Parent- BussyParent- Bussy

Birthplace-Thessaly, Greece Birthplace-Thessaly, Greece

Date- 1828 A.D. Date- 1828 A.D.

It’s an….It’s an….

METAL METAL

Brief Description Brief Description

Protons- 12Protons- 12eeˉ-12ˉ-12

Density-1.7gDensity-1.7g Melting point-Melting point-1202°F (650°C) 1202°F (650°C) Boiling point- Boiling point- 1994°F (1090°C)1994°F (1090°C) Specific Heat-Specific Heat-1.023 J/g•K 1.023 J/g•K

Chemical Properties Chemical Properties

Valence #-2Valence #-2 Ion- Mg +2Ion- Mg +2 Oxidation #= +2Oxidation #= +2 Compounds-Compounds- 1. MgH2 1. MgH2 2. MgF2 2. MgF2 3. Mg3N2 3. Mg3N2

Positives UsesPositives UsesNegatives UsesNegatives Uses

1. Vitamins 1. Vitamins Found in many Found in many

foods which help foods which help the body out the body out greatly.greatly.

Low levels may Low levels may cause-cause-

1. cardiovascular 1. cardiovascular disease disease

2. nervousness 2. nervousness 3. fatigue3. fatigue

Calcium Calcium

ParentParent -- Sir Humphry DavySir Humphry Davy

Birth Place & Date –Birth Place & Date –

1808 in London1808 in London

Gender – Gender – MetalMetal

Physical Description 1 - Physical Description 1 - Number of protons & electrons = 20 Number of protons & electrons = 20 Number of neutrons - 20Number of neutrons - 20

Physical Description 2 – Physical Description 2 – MP: 1115 K, MP: 1115 K, BP: 1771 K BP: 1771 K Density @ 293 K: 1.55 g/cm3 Density @ 293 K: 1.55 g/cm3 Specific Heat: 0.647 J/g•KSpecific Heat: 0.647 J/g•K

Lewis Dot Diagram and Lewis Dot Diagram and Bohr DiagramsBohr Diagrams

Chemical Description –Chemical Description – Calcium forms alloys with aluminum, beryllium, copper, lead, and Calcium forms alloys with aluminum, beryllium, copper, lead, and

magnesium.magnesium. Ion = +2Ion = +2 Valence # = +2Valence # = +2 Oxidation # = +2Oxidation # = +2 High reactivity High reactivity

Positive Attributes - Positive Attributes - life forms for bones and shellslife forms for bones and shells Calcium is used to remove oxygen, sulfur and carbon from alloys. Calcium is used to remove oxygen, sulfur and carbon from alloys.

Negative Attributes –Negative Attributes – Non toxic and an essential metal for living organisms.Non toxic and an essential metal for living organisms.

Strontium Strontium

ParentParent - - Sir Humphry DavySir Humphry Davy

Birth Place & Date – Birth Place & Date – 1808 by electrolysis 1808 by electrolysis

Gender – Gender – MetalMetal

Physical Description 1 –Physical Description 1 – Number of protons & electrons – 38Number of protons & electrons – 38 Number of neutrons - 50Number of neutrons - 50

Physical Description 2 – Physical Description 2 – BP: 1653 K, BP: 1653 K, MP: 1050 K MP: 1050 K Density @ 293 K: 2.6 g/cm3 Density @ 293 K: 2.6 g/cm3 Specific heatSpecific heat: 0.30 J g-1 K-1 : 0.30 J g-1 K-1

Lewis Dot Diagram and Lewis Dot Diagram and Bohr DiagramsBohr Diagrams

Chemical Description –Chemical Description – Ion = +2Ion = +2 Valence # = +2Valence # = +2 Oxidation # = +2Oxidation # = +2

Positive Attributes –Positive Attributes – Strontium is used for producing glass (cathode ray tubes) for color Strontium is used for producing glass (cathode ray tubes) for color

televisions. It is also used in producing ferrite ceramic magnets and in televisions. It is also used in producing ferrite ceramic magnets and in refining zinc. refining zinc.

Negative Attributes –Negative Attributes – Strontium's non-radioactive isotopes are considered non-toxic. Strontium's non-radioactive isotopes are considered non-toxic.

Parent Parent

Sir Humphrey Davy Sir Humphrey Davy

Birthplace and Date of Birthplace and Date of Birth Birth

1808 in England1808 in England

Gender Gender

Metal Metal

Physical Description #1 Physical Description #1

56 56 protons, protons, 81 81 electrons, electrons, 56 56 neutrons.neutrons.

Bohr Diagram

Lewis Dot Diagram

Physical Description #2Physical Description #2

Boiling point-1870 °C (3398 °F )Boiling point-1870 °C (3398 °F ) Melting point-727 °C (1341 °F )Melting point-727 °C (1341 °F ) Atomic Weight- 137.327 Atomic Weight- 137.327 Is a solid at about 25°C Is a solid at about 25°C

Chemical Description Chemical Description

Has 2 Valence Has 2 Valence Electrons. Electrons.

Oxidizes very easily Oxidizes very easily and reacts with and reacts with water and alcohol. water and alcohol.

Ion- -2Ion- -2 Oxidation Number- Oxidation Number-

+2 +2

Positive Attributes Positive Attributes

Barium is can be used in paints, Barium is can be used in paints, fireworks, plastic fillers, and a fireworks, plastic fillers, and a component in oil well drilling fluids. component in oil well drilling fluids.

Negative Attributes Negative Attributes Can be extremely poisonous if consumed. Can be extremely poisonous if consumed. In certain types of x-rays, it can be In certain types of x-rays, it can be

harmful to intestines. harmful to intestines.

Sources Sources www.bing.comwww.bing.com www.radiology.comwww.radiology.com www.chemcool.comwww.chemcool.com www.fordhamprep.comwww.fordhamprep.com http://www.luxme.com/productsample/http://www.luxme.com/productsample/

Calcium_Carbonate.jpgCalcium_Carbonate.jpg http://home.frognet.net/~ejcov/davyphoto.jpghttp://home.frognet.net/~ejcov/davyphoto.jpg http://www.chemicalelements.com/elements/ca.htmlhttp://www.chemicalelements.com/elements/ca.html http://www.chemicool.com/elements/calcium.htmlhttp://www.chemicool.com/elements/calcium.html http://www.chemicool.com/elements/strontium.htmlhttp://www.chemicool.com/elements/strontium.html http://www.angelo.edu/faculty/kboudrea/http://www.angelo.edu/faculty/kboudrea/

molecule_gallery/element078_platinum/molecule_gallery/element078_platinum/flame_strontium_02_small.jpgflame_strontium_02_small.jpg