Period 3 Flashcards
Description of sodium and water
-Vigourus
-Na forms a ball that fizzes on the surface
-Redox
-Produces strong alkaline solution
Description of magnesium and water
-Slower reaction
-Alkaline solution
Description of magnesium with steam
-Faster reaction
-Bright white light
Description of sodium with oxygen
-Oxidised
-exothermic
-burns with a bright yellow flame
-Forms white powder (could have a yellow tint)
Description of magnesium and oxygen
-oxidised
-exothermic
-burns with a bright white flame
-forms a white powder
Des aluminium and oxygen
-Heated at high temp
-Heated jar of oxygen= bright white flame
-Forms a thin layer of aluminium oxide at room temp
Des silicon and oxygen
-bright white flame?
-High temp
-Thin layer of silicon dioxide
Des white phosphorus and oxygen
-At room temp, spontaneously ignite with oxygen
-White solid
-White smoke
Des red phosphorus and oxygen
-Heat up before oxidised
-White solid
-white smoke
Des sulphur and oxygen
-Heat
-Blue flame
-Colourless and eggy gas
Which oxides have ionic bonding?
-Sodium
-Magnesium
-Aluminium
Which oxides have covalent bonding?
-Silicon
-Phosporus
-Sulphur
Structure of sodium oxide
giant ionic lattice
Structure magnesium oxide
ionic lattice
Structure of aluminium oxide
ionic lattice
Structure of silicon dioxide
giant covalent
Structure of phosphourus oxide
simple covalent
Structure of sulphur trioxide and dioxide
simple covalent
Why does the bonding of aluminium oxide differ from the rest?
-Ionic yet some covalent character
Which oxides are insoluble in water?
Silocon dioxide and aluminium oxide do not react
Solubility of sodium oxide
-Very soluble
-Dissociates
- strong Base (13-14)
Sol of magnesium oxide
-Less soluble
-9-10pH
-base
sol of phosphorus oxide
-Vigourus
-1-2pH
-Dissociates in stages to become a phosphate ion (tetrahedral)
sol of sulphur trioxide
-Vigourus
-0-1pH
-Dissociates in stages to sulphate ion (tetrahedral)
