Alkaline earth metalsAlkaline earth metals

Alkaline earth metals (cont.)Alkaline earth metals (cont.)

Common PropertiesCommon Properties

All In the second rowAll In the second row

Don’t occur as free elementsDon’t occur as free elements

Most commonly are found occurring Most commonly are found occurring as the carbonates, phosphates as the carbonates, phosphates silicates, and sulfates silicates, and sulfates

Atoms loose 2 electronsAtoms loose 2 electrons

Most are insoluble or slightly solubleMost are insoluble or slightly soluble

Very ReactiveVery Reactive

Natural OccurrencesNatural Occurrences

Found in earth’s crustFound in earth’s crust

Rock StructuresRock Structures

Magnesium is found in Carmelite, Magnesium is found in Carmelite, magnetite and dolomite. Extracted magnetite and dolomite. Extracted from sea water from sea water

Calcium is found in found in chalk, Calcium is found in found in chalk, limestone, gypsum and anhydritelimestone, gypsum and anhydrite

Chemical propertiesChemical properties

All but Beryllium form oxides at room All but Beryllium form oxides at room temperaturetemperature

Magnesium reduces carbon dioxideMagnesium reduces carbon dioxide

Strontium, Calcium, barium when Strontium, Calcium, barium when put in water react to form hydroxidesput in water react to form hydroxides

Flame testFlame test

– Mg: WhiteMg: White

– Ca: Dark redCa: Dark red– Sr: CrimsonSr: Crimson– Ba: light greenBa: light green

Beryllium- UsesBeryllium- UsesSpacecraft Spacecraft

AircraftAircraft

MissilesMissiles

X-raysX-rays

Magnesium- UsesMagnesium- UsesAirplanesAirplanes

MissilesMissiles

FlaresFlares

BombsBombs

Car EnginesCar Engines

MedicineMedicine

ComputersComputers

Calcium- UsesCalcium- UsesBuilds Strong Builds Strong bones and teethbones and teeth

Used in MilkUsed in Milk

Used to make Used to make plasterplaster

Uses StrontiumUses StrontiumFlaresFlares

Uses to create Uses to create Crimson ColorCrimson Color

Uses- BariumUses- BariumMedical Medical ApplicationsApplications

Glass makingGlass making

Rat poisonRat poison

Making RubberMaking Rubber

Uses- RadiumUses- Radium

To treat Cancer