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reaction of group 3 oxides

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

write an equation for the reaction of sodium with water

Back (Answer)

Na (s) + H2O (aq) —> NaOH (aq) + 1/2 H2 (g)

#2
Front (Question)

describe what is observed when sodium reacts with water

Back (Answer)

Na floats Fizzes due to H2 production Moves around on surface of water

#3
Front (Question)

write an equation for the reaction of magnesium with steam

Back (Answer)

Mg (s) + H20 (g) —> MgO (s) + H2 (g)

#4
Front (Question)

describe what is observed when magnesium reacts with water

Back (Answer)

Mg burns with a bright white light white solid formed

#5
Front (Question)

write an equation of the reaction of Na with Oxygen

Back (Answer)

2Na (s) + 1/2 O2 (g) —-> Na2O (s)

#6
Front (Question)

describe what is observed when sodium reacts with oxygen

Back (Answer)

Na burns with a yellow/orange flame, white solid produced

#7
Front (Question)

write an equation for the reaction of Mg with oxygen

Back (Answer)

Mg (s) + 1/2 O2 (g) —-> MgO (s)

#8
Front (Question)

describe what is observed when Mg reacts with oxygen

Back (Answer)

Mg burns with bright white flame white solid produced

#9
Front (Question)

write an equation for the reaction of Al with oxygen

Back (Answer)

4Al (s) + 3O2 (g) —-> 2Al2O3 (s)

#10
Front (Question)

describe what is observed when Al reacts with oxygen

Back (Answer)

Al burns with a white flame white solid produced

#11
Front (Question)

write an equation for the reaction of Si with oxygen

Back (Answer)

Si (s) + O2 (g) —> SiO2 (g)

#12
Front (Question)

describe what is observed when Si reacts with oxygen

Back (Answer)

Si burns with a white flame Grey solid is formed

#13
Front (Question)

write an equation for the reaction of P with oxygen

Back (Answer)

P4 (s) + 5O2 (g) —> P4O10 (s)

#14
Front (Question)

describe what is observed when P reacts with oxygen

Back (Answer)

P burns with a white flame white solid formed

#15
Front (Question)

write an equation for the reaction of S with oxygen

Back (Answer)

S8 (s) + 8O2 (g) —> 8SO2 (g)

#16
Front (Question)

describe what is observed when S reacts with oxygen

Back (Answer)

S burns with a blue flame gaseous SO2 formed which turns UI red

#17
Front (Question)

explain how to produce SO3

Back (Answer)

react SO2 with O2 with V2O5 catalyst

#18
Front (Question)

state the type of bonding in the period 3 oxides

Back (Answer)

Na2O, MgO, Al2O3 - ionic SiO2 - giant covalent P4O10, SO2, SO3 - van der waals (simple molecular)

#19
Front (Question)

write an equation for the reaction of Na2O with water, state the pH of the solution formed

Back (Answer)

Na2O + 2H2O –> 2NaOH pH 14

#20
Front (Question)

write an equation for the reaction of MgO with water, state the pH of the solution formed

Back (Answer)

MgO + H20 –> Mg (OH)2 pH 10

#21
Front (Question)

explain why MgO produces a less basic solution than Na2O

Back (Answer)

Mg (OH)2 is sparingly soluble in water, much lower OH - ion concentration

#22
Front (Question)

explain why Al2O3 does not react with water

Back (Answer)

the lattice is too strong to break

#23
Front (Question)

explain why SiO2 does not react with water

Back (Answer)

the lattice is too strong to break

#24
Front (Question)

write an equation for the reaction of P4O10 with water, state the pH of the solution formed

Back (Answer)

P4O10 + 6H2O —> 12H+ + 4PO4 3- pH 1-2