Period 3 Elements

Flashcard maker : Rae Jordan
What would be observed when Sodium burns in oxygen?
Yellow flame
What would be observed when Magnesium burns in oxygen?
white flame / white light
solid / powder / smoke / ash / white fumes
What would be observed when Aluminium burns in oxygen?
White flame
What would be observed when Silicon burns in oxygen?
White flame
White smoke
What would be observed when Phosphorus burns in oxygen?
White flame
Smoke
What would be observed when Sulphur burns in oxygen?
blue flame
fumes or misty or pungent/choking/smelly gas
What is the equation for the reaction that takes place when Sodium burns in oxygen?
4Na + O2 -> 2Na2O
What is the equation for the reaction that takes place when Magnesium burns in oxygen?
2Mg + O2 -> 2MgO
What is the equation for the reaction that takes place when Aluminium burns in oxygen?
4Al + 3O2 -> 2Al2O3
What is the equation for the reaction that takes place when Silicon burns in oxygen?
Si + O2 -> SiO2
What is the equation for the reaction that takes place when Phosphorus burns in oxygen?
4P + 5O2 -> P4O10
What is the equation for the reaction that takes place when Sulphur burns in oxygen?
S + O2 -> SO2
What is the bonding in Sodium oxide?
Ionic
What is the bonding in Magnesium oxide?
Ionic
What is the bonding in Aluminium oxide?
Ionic
What is the bonding in Silicon oxide?
Covalent
What is the bonding in Phosphorus oxide?
Covalent
What is the bonding in Sulphur dioxide?
Covalent
What are the properties of Sodium?
Soft, silver, shiny
Conducts electricity
What are the properties of Magnesium?
Soft, silver, shiny
Conducts electricity
What are the properties of Aluminium?
Easily malleable, silver, shiny
Conducts electricity
What are the properties of Silicon?
Hard, grey-blue solid
Partial conductor of electricity (check this)
What are the properties of Phosphorus?
Red or white solid, low melting and boiling point
Doesn’t conduct electricity
What are the properties of Sulphur?
Yellow solid, low melting and boiling point
Doesn’t conduct electricity
What are the properties of Chlorine?
Green gas, low melting and boiling point
Doesn’t conduct electricity
What are the properties of Argon?
Colourless, odourless gas
Unreactive
What are the observations when Sodium reacts with water?
Violent reaction
Hydrogen released
What are the observations when Magnesium reacts with water?
Slow reaction
Hydrogen released
What are the observations when Magnesium reacts with steam?
Fast reaction
Hydrogen released
What are the observations when Chlorine reacts with water?
Chlorine dissolves
Hydrochloric acid formed
Chloric acid formed
What is the equation for the reaction of Sodium with water?
2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)
What is the equation for the reaction of magnesium with water?
Mg(s) + 2H2O(l) -> Mg(OH)2(aq) + H2(g)
What is the equation for the reaction of magnesium with steam?
Mg(s) + H2O(g) -> MgO(s) + H2(g)
What is the equation for the reaction of Chlorine with water?
Cl2(aq) + H2O(l) HClO(aq) + HCl(aq)
What are the properties of sodium oxide?
White
High melting point (1548K)
What are the properties of the magnesium oxide?
White
High melting point (3125K)
What are the properties of the Aluminium oxide?
White
High melting point (2345K)
What are the properties of the Silicon oxide?
White
High melting point (1883K)
What are the properties of the Phosphorus oxide?
Low melting point (573K)
What are the properties of the Sulphur oxide?
Low melting point (200 for SO2, 290K for SO3)
What is the structure of the sodium oxide?
Giant ionic
What is the structure of the magnesium oxide?
Giant ionic
What is the structure of the aluminium oxide?
Giant ionic
What is the structure of the silicon oxide?
Giant covalent / Macromolecular
What is the structure of the phosphorus oxide?
Molecular
What is the structure of the sulphur oxide?
Molecular
What is observed when the sodium oxide is reacted with water?
Strongly alkaline solution formed
pH 13-14
What is observed when the magnesium oxide is reacted with water?
Weakly alkaline solution formed
pH 10
What is observed when the aluminium oxide is reacted with water?
No reaction
What is observed when the silicon oxide is reacted with water?
No reaction
What is observed when the phosphorus oxide is reacted with water?
Strongly acidic solution produced
pH 0-1
What is observed when sulphur dioxide is reacted with water?
Acidic solution produced pH 2-3
What is observed when sulphur trioxide is reacted with water?
White foggy droplets of acid form pH 0-1
What is the equation for reaction of water with the sodium oxide?
Na2O + H2O -> Na+ + 2OH-
What is the equation/s for reaction of water with the magnesium oxide?
Mg + H2O -> Mg(OH)2
Mg(OH)2 -> Mg2+ + 2OH-
What is the equation for reaction of water with the Aluminium oxide?
No reaction
What is the equation for reaction of water with the silicon oxide?
No reaction
What is the equation for reaction of water with the phosphorus oxide?
P4O10 + 6H2O -> 4H3PO4
What is the equation/s for reaction of water with sulphur dioxide?
SO2 + H2O -> H2SO3
H2SO3 -> H+ + HSO3-
What is the equation/s for reaction of water with sulphur trioxide?
SO3 + H2O -> H2SO4
H2SO4 -> H+ + HSO4-
What is the equation for the reaction that occurs when sodium oxide reacts with hydrochloric acid?
Na2O + 2HCl -> 2NaCl + H2O
What is the equation for the reaction that occurs when magnesium oxide reacts with sulphuric acid?
MgO + H2SO4 -> MgSO4 + H2O
What is the equation for the reaction that occurs when aluminium oxide reacts with sulphuric acid?
Al2O3 + 3H2SO4 -> Al2(SO4)3 + 3H2O
What is the equation for the reaction that occurs when aluminium oxide reacts with hot, concentrated sodium hydroxide (and water)?
Al2O3 + 2NaOH + 3H2O -; 2NaAl(OH)4
What is the equation for the reaction that occurs when aluminium oxide reacts with hydrochloric acid?
Al2O3 + 6H+ -> 2Al3+ + 3H2O
What is the equation for the reaction that occurs when aluminium oxide reacts with sodium hydroxide?
Al2O3 + 2OH– + 3H2O -> 2Al(OH)4–
What is the equation for the reaction that occurs when silicon oxide reacts with hot, concentrated sodium hydroxide?
SiO2 + 2NaOH -; Na2SiO3 + H20
What is the equation for the reaction that occurs when phosphorus oxide reacts with hot, concentrated sodium hydroxide?
12NaOH + P4O10 -; 4Na3PO4 + 6H2O
What is the equation/s for the reaction that occurs when sulphur dioxide reacts with sodium hydroxide?
SO2 + NaOH -> NaHSO3
NaHSO3 + NaOH -> Na2SO3 + H2O

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