Alkaline earth metals. Alkaline earth metals (cont.)
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Transcript of Alkaline earth metals. Alkaline earth metals (cont.)
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