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Chemistry > 3.2.4 - Period 3 Elements > Flashcards

3.2.4 - Period 3 Elements Flashcards

(51 cards)

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1
Q

Equation for reaction between sodium and water

A

2Na + 2H2O –> 2NaOH + H2

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2
Q

Equation for reaction between magnesium and water

A

Mg + 2H2O –> Mg(OH)2 + H2

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3
Q

Sodium and Magnesium reactivity

A

Sodium is more reactive than magnesium as it only has to lose one electron to form an ion whereas magnesium has to lose two.

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4
Q

Magnesium and steam

A

Steam can be used to increase the speed of reaction. Steam provides the reaction with greater energy resulting in a violent reaction

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5
Q

Flame colour of magnesium when reacting with steam

A

bright white

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6
Q

Equation for reaction between magnesium and steam

A

Mg + H2O –> MgO + H2

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7
Q

Period 3 elements reacting with oxygen

A

Form oxides with each element in their highest oxidation state. This number is often the same as the group number

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8
Q

Oxide of sodium and oxygen

A

Sodium oxide (Na2O), +1 oxidation state

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9
Q

Oxide of magnesium and oxygen

A

magnesium oxide (MgO), +2 oxidation state

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10
Q

Oxide of aluminium and oxygen

A

Aluminium oxide (Al2O3), +3 oxidation state

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11
Q

Oxide of silicon and oxygen

A

Silicon dioxide (SiO2), +4 oxidation state

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12
Q

Oxide of phosphorus and oxygen

A

Phosphorus oxide (P4O10), +5 oxidation state

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13
Q

Oxide of sulfur and oxygen

A

Sulfur dioxide (SO2), +4 oxidation state (Can react to form SO3 with +6 oxidation state but requires high temp and catalyst)

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14
Q

Structure & Bonding of Na2O

A

Ionic

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15
Q

Relative melting point of Na2O

A

1250°c

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16
Q

Reactivity of Na2O

A

Vigorous

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17
Q

Structure & Bonding of MgO

A

Ionic

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18
Q

Relative melting point of MgO

A

2750°c

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19
Q

Reactivity of MgO

A

Vigorous

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20
Q

Structure & Bonding of Al2O3

A

Ionic (Covalent Character)

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21
Q

Relative melting point of Al2O3

22
Q

Reactivity of Al2O3

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A

Slow but faster if powdered

23
Q

Structure & Bonding of SiO2

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A

Macromolecular

24
Q

Relative melting point of SiO2

25
Reactivity of SiO2
Slow
26
Structure & Bonding of P4O10
Simple covalent
27
Relative melting point of P4O10
500°c
28
Reactivity of P4O10
Vigorous
29
Structure & Bonding of SO2
Simple covalent
30
Relative melting point of SO2
-10°C
31
Reactivity of SO2
Burns steadily
32
Ionic oxides reaction with water
Form alkaline solutions with a pH around 10-14
33
Equation for reaction between Na2O and water
Na2O + H2O --> 2NaOH
34
Equation for reaction between MgO and water
MgO + H2O --> Mg(OH)2
35
Simple covalent oxides reaction with water
Form acidic solutions with a pH around 0-2 and when in solution these acids dissociate into H+ ions and ions of conjugate bases
36
Equation for reaction between P4O10 and water
P4O10 + 6H2O --> 4H3PO4
37
Equation for reaction between SO2 and water
SO2 + H2O --> H2SO3
38
Equation for reaction between SO3 and water
SO3 + H2O --> H2SO4
39
Reaction between basic, ionic oxides and acids
Produces a salt and water which is a neutralisation reaction
40
Equation for reaction between Na2O and HCl
Na2O + 2HCl --> 2NaCl + H2O
41
Equation for reaction between MgO and H2SO4
MgO + H2SO4 --> MgSO4 + H2O
42
Reaction between acidic, covalent oxides and bases
Produces a salt and water in a neutralisation reaction
43
Equation for reaction between SiO2 and NaOH
SiO2 + 2NaOH --> Na2SiO3 + H2O
44
Equation for reaction between P4O10 and NaOH
P4O10 + 12NaOH --> 4Na3PO4 + 6H2O
45
Equation for reaction between SO2 and NaOH
SO2 + 2NaOH --> Na2SO3 + H2O
46
Equation for reaction between SO3 and NaOH
SO3 + 2NaOH --> Na2SO4 + H2O
47
Bonding in aluminum oxide
Partially ionic and covalent meaning it is insoluble in water as the ions don't dissociate
48
Aluminium oxide can act as both an...
acid and base meaning it is amphoteric.
49
Aluminium oxide can react to form...
a salt and water in neutralisation reactions
50
Equation for reaction between Al2O3 and H2SO4
Al2O3 + 3H2SO4 --> Al2(SO4)3 + 3H2O
51
Equation for reaction between Al2O3, NaOH and water
Al2O3 + 2NaOH + 3H2O --> 2NaAl(OH)4

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