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3.2.4 Properties of Period 3 elements and their oxides

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

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#1
Front (Question)

What does the graph look like for the boiling points of period 3 elements?

Back (Answer)

See card

#2
Front (Question)

What is the reaction of sodium with water?

Back (Answer)

2Na (s) + 2H2O (l) = 2NaOH (aq) + H2 (g) Reacts violently Forms a strong alkali

#3
Front (Question)

What is the reaction of magnesium with water?

Back (Answer)

Mg (s) + 2H2O (l) = Mg(OH)2 (aq) + H2 (g) Reacts slowly Or with steam: Mg (s) + H2O (g) = MgO (s) + H2 (g) Reacts more rapidly

#4
Front (Question)

How does sodium react with oxygen?

Back (Answer)

Melts then ignites 4Na (s) + O2 (g) = 2Na2O (s)

#5
Front (Question)

How does magnesium react with oxygen?

Back (Answer)

Bright white flame 2Mg (s) + O2 (g) = 2MgO (s)

#6
Front (Question)

How does aluminium react with oxygen?

Back (Answer)

White sparks formed 4Al (s) + 3O2 (g) = 2Al2O3 (s)

#7
Front (Question)

How does silicon react with oxygen?

Back (Answer)

No observable reaction Si (s) + O2 (g) = SiO2 (s)

#8
Front (Question)

How does phosphorous react with oxygen?

Back (Answer)

Bright white / yellow flame with white fumes P4 (s) + 5O2 (g) = P4O10 (s)

#9
Front (Question)

How does sulfur react with oxygen?

Back (Answer)

Blue flame with fumes S (s) + O2 (g) = SO2 (g)

#10
Front (Question)

How does Na2O react with water?

Back (Answer)

Rapidly Forms NaOH pH 13 - 14

#11
Front (Question)

How does MgO react with water?

Back (Answer)

Slowly Forms Mg(OH)2 (aq) pH 8 - 10

#12
Front (Question)

How does Al2O3 react with water?

Back (Answer)

No observable change No product formed pH 7

#13
Front (Question)

How does SiO2 react with water?

Back (Answer)

No observable change No product formed pH 7

#14
Front (Question)

How does P4O10 react with water?

Back (Answer)

Vigorously Forms H3PO4 pH 2 - 4

#15
Front (Question)

How does SO2 react with water?

Back (Answer)

Forms H2SO3 pH 3 - 5

#16
Front (Question)

How does SO3 react with water?

Back (Answer)

Forms H2SO4 pH 1 - 3

#17
Front (Question)

Are metal oxides acids or bases?

Back (Answer)

Bases

#18
Front (Question)

Are non-metal oxides acids or bases?

Back (Answer)

Acids

#19
Front (Question)

What is the trend in the bonding and structure of period 3 oxides?

Back (Answer)

Na, Mg: ionic bonding, giant ionic Al: ionic bonding, giant ionic, covalent character Si: covalent bonding, giant covalent P, S: covalent bonding, simple covalent

#20
Front (Question)

How does Na2O react with HCl?

Back (Answer)

Na2O + 2HCl = 2NaCl + H2O

#21
Front (Question)

How does MgO react with HCl?

Back (Answer)

MgO + 2HCl = MgCl2 + H2O

#22
Front (Question)

How does Al2O3 react with HCl?

Back (Answer)

Al2O3 + 6HCl = 2AlCl3 + 3H2O

#23
Front (Question)

How does Al2O3 react with NaOH?

Back (Answer)

Al2O3 + 2NaOH + 3H2O = 2NaAl(OH)4

#24
Front (Question)

How does SiO2 react with NaOH?

Back (Answer)

SiO2 + 2NaOH = Na2SiO3 + H2O