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Chemistry > 3.2.4 - Period 3 Elements > Flashcards

3.2.4 - Period 3 Elements Flashcards

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

A

Slow but faster if powdered

23
Q

Structure & Bonding of SiO2

A

Macromolecular

24
Q

Relative melting point of SiO2

25
Q

Reactivity of SiO2

26
Q

Structure & Bonding of P4O10

A

Simple covalent

27
Q

Relative melting point of P4O10

28
Q

Reactivity of P4O10

29
Q

Structure & Bonding of SO2

A

Simple covalent

30
Q

Relative melting point of SO2

31
Q

Reactivity of SO2

A

Burns steadily

32
Q

Ionic oxides reaction with water

A

Form alkaline solutions with a pH around 10-14

33
Q

Equation for reaction between Na2O and water

A

Na2O + H2O –> 2NaOH

34
Q

Equation for reaction between MgO and water

A

MgO + H2O –> Mg(OH)2

35
Q

Simple covalent oxides reaction with water

A

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
Q

Equation for reaction between P4O10 and water

A

P4O10 + 6H2O –> 4H3PO4

37
Q

Equation for reaction between SO2 and water

A

SO2 + H2O –> H2SO3

38
Q

Equation for reaction between SO3 and water

A

SO3 + H2O –> H2SO4

39
Q

Reaction between basic, ionic oxides and acids

A

Produces a salt and water which is a neutralisation reaction

40
Q

Equation for reaction between Na2O and HCl

A

Na2O + 2HCl –> 2NaCl + H2O

41
Q

Equation for reaction between MgO and H2SO4

A

MgO + H2SO4 –> MgSO4 + H2O

42
Q

Reaction between acidic, covalent oxides and bases

A

Produces a salt and water in a neutralisation reaction

43
Q

Equation for reaction between SiO2 and NaOH

A

SiO2 + 2NaOH –> Na2SiO3 + H2O

44
Q

Equation for reaction between P4O10 and NaOH

A

P4O10 + 12NaOH –> 4Na3PO4 + 6H2O

45
Q

Equation for reaction between SO2 and NaOH

A

SO2 + 2NaOH –> Na2SO3 + H2O

46
Q

Equation for reaction between SO3 and NaOH

A

SO3 + 2NaOH –> Na2SO4 + H2O

47
Q

Bonding in aluminum oxide

A

Partially ionic and covalent meaning it is insoluble in water as the ions don’t dissociate

48
Q

Aluminium oxide can act as both an…

A

acid and base meaning it is amphoteric.

49
Q

Aluminium oxide can react to form…

A

a salt and water in neutralisation reactions

50
Q

Equation for reaction between Al2O3 and H2SO4

A

Al2O3 + 3H2SO4 –> Al2(SO4)3 + 3H2O

51
Q

Equation for reaction between Al2O3, NaOH and water

A

Al2O3 + 2NaOH + 3H2O –> 2NaAl(OH)4

Chemistry (32 decks)

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