Period 3 Flashcards
Sodium reaction with water
2Na + 2H2O = 2NaOH + H2
Fizzing vigorously in cold water
Alkaline solution
Magnesium reaction with water
Mg + 2H2O = Mg(OH)2 + H2
Reacts slowly in cold water
Mg + H2O = MgO + H2
Reaction of sodium with oxygen
2Na + 1/2O2 = Na2O
Reaction of magnesium with oxygen
Mg + 1/2O2 = Na2O
Reaction of Aluminium with oxygen
2Al + 3/2 O2 = Al2O3
Reaction of silicon with oxygen
Si + O2 = SiO2
Reaction of phosphorus with oxygen
P4 + 5O2 = p4O10
Reaction of sulfur with oxygen
S + O2 = SO2
What colour is sodium when it burns
Yellow
What colour is magnesium when it burns
Brilliant white
What colour is phosphorus when it burns
Brilliant white
What colour is sulfur when it burns
Blue
Reaction of Na2O with water
Na2O + H2O = 2NaOH
pH 14
Reaction of MgO with water
MgO + H2O = Mg(OH)2
pH 9
Reaction of P4O10 with water
P4O10 +6H2O = 4H3PO4
Reaction of SO2 with Water
SO2 +H2O = H2SO3
Reaction of SO3 with water
SO3 + H2O = H2SO4
Define amphoteric
Something with the properties of an acid and a base
Al2O3 reaction with sulfuric acid
Al2O3 + 3H2SO4 = Al2(SO4)3 + 3H2O
Al2O3 reaction with sodium hydroxide
Al2O3 + 2NaOH + 3H2O = NaAl(OH)4
Product called Sodium Aluminate
General equation for acids and bases
Acid + Base = salt + water