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Chemistry > Periodicity > Flashcards

Periodicity Flashcards

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1
Q

Describe sodium + water

A
  1. Melts
  2. Moves on surface of water
  3. Fizzes
  4. Gets smaller until all reacts
  5. May burn with yellow/orange flame
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2
Q

Sodium + water equation

A

2Na + 2H2O -> 2NaOH + H2

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3
Q

Describe magnesium + water

A
  1. Cold water : no visible reaction

2. Steam : burns with white flame to form white powder

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4
Q

Magnesium + water equation

A

Mg + H2O -> MgO + H2

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5
Q

Describe sodium + oxygen

A

Burns with yellow/orange flame

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6
Q

Sodium + oxygen equation

A

4Na + O2 -> 2Na2O

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7
Q

Describe magnesium + oxygen

A

Burns with bright white flame

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8
Q

Magnesium + oxygen equation

A

2Mg + O2 -> 2MgO

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9
Q

Describe aluminium + oxygen

A

Burns with white flame

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10
Q

Aluminium + oxygen equation

A

2Al + 3O2 -> 2Al2O3

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11
Q

Describe silicon + oxygen

A

Burns with white flame

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12
Q

Silicon + oxygen equation

A

Si + O2 -> SiO2

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13
Q

Describe phosphorus + oxygen

A

Burns with bright white flame

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14
Q

Phosphorus + oxygen equation

A

P4 + 5O2 -> P4O10

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15
Q

Describe sulfur + oxygen

A

Burns with blue flame

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16
Q

Sulfur + oxygen equation

A

S + O2 -> SO2

17
Q

Nature and Structure of Sodium Oxide

A

Basic, Ionic

18
Q

Nature and Structure of Magnesium Oxide

A

Sparingly soluble -> Basic, Ionic (Higher melting point than Na2O as Mg2+ ions are smaller and higher charged than Na+)

19
Q

Nature and Structure of Aluminium Oxide

A

Insoluble due to very high lattice enthalpy, Ionic (not as high a melting point as expected due to some covalent character due to polarising nature of Al3+ ions)

20
Q

Nature and Structure of Silicon Oxide

A

Insoluble due to lattice of atoms linked by string covalent bonds, Giant covalent

21
Q

Nature and Structure of Phosphorus Oxide

A

Acidic, Reacts violently, Simple molecular

22
Q

Nature and Structure of Sulfur Dioxide

A

Acidic, Dissolves, Simple molecular, Gas

23
Q

Nature and Structure of Sulfur Trioxide

A

Acidic, Reacts violently, Simple molecular, Gas

24
Q

Acid-Base property of Na2O

A

Basic

Na2O + 2H+ -> 2Na+ + H2O

25
Q

Acid-Base property of MgO

A

Basic

MgO + 2H+ -> Mg2+ + H2O

26
Q

Acid-Base property of Al2O3

A

Amphoteric
Al2O3 + 6H+ -> 2Al3+ + 3H2O
Al2O3 + 2OH- + 3H2O -> 2Al(OH)4-

27
Q

Acid-Base property of SiO2

A

Acidic
SiO2 + 2OH- -> SiO3(2-) + H2O
must be hot, conc. NaOH

28
Q

Acid-Base property of P4O10

A

Acidic

P4O10 + 12OH- -> 4PO4(3-) + 6H2O

29
Q

Acid-Base property of SO2

A

Acidic

SO2 + 2OH- -> SO3(2-) + H2O

30
Q

Acid-Base property of SO3

A

Acidic

SO3 + 2OH- -> SO4(2-) + H2O

Chemistry (12 decks)

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