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Save My Exams - Chem > Period 3 & Oxides INORGANIC > Flashcards

Period 3 & Oxides INORGANIC Flashcards

1
Q

What is the equation for the reaction between sodium and cold water?

A

2Na (s) + 2H₂O (l) → 2NaOH (aq) + H₂ (g)

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2
Q

What happens when sodium reacts with cold water?

A

Vigorous exothermic reaction
Sodium floats on surface of water fizzing rapidly and melting due to heat
Very alkaline solution formed

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3
Q

How does oxidation state of sodium change when it reacts with cold water?

A

0 in elemental state to +1 in sodium hydroxide

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4
Q

What is the equation for the reaction between magnesium and cold water?

A

Mg (s) + 2H₂O (l) → Mg(OH)₂ (aq) + H₂ (g)

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5
Q

What happens when magnesium reacts with cold water?

A

Extremely slow reaction
Small number of bubbles will form on magnesium ribbon
Less alkaline solution forms so only partially soluble

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6
Q

How does oxidation state of magnesium change when it reacts with cold water?

A

0 in elemental state to +2 in magnesium hydroxide

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7
Q

What is the equation for the reaction between heated magnesium and steam?

A

Mg (s) + H₂O (g) → MgO (s) + H₂ (g)

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8
Q

What happens when heated magnesium reacts with steam?

A

Magnesium burns with bright, white flame
Faster than with cold water

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9
Q

How does oxidation state of magnesium change when it reacts with steam?

A

0 in elemental state to +2 in magnesium oxide

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10
Q

What is the equation for the reaction between sodium and oxygen?

A

4Na (s) + O₂ (g) → 2Na₂O (s)

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11
Q

What is the equation for the reaction between magnesium and oxygen?

A

2Mg (s) + O₂ (g) → 2MgO (s)

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12
Q

What is the equation for the reaction between aluminium and oxygen?

A

4Al (s) + 3O₂ (g) → 2Al₂O₃ (s)

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13
Q

What is the equation for the reaction between silicon and oxygen?

A

Si (s) + O₂ (g)→ SiO₂ (s)

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14
Q

What is the equation for the reaction between phosphorus and oxygen?

A

4P (s) + 5O₂ (g) → P₄O₁₀ (s)

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15
Q

What is the equation for the reaction between sulfur and oxygen?

A

S (s) + O₂ (g) → SO₂ (g)

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16
Q

What are the conditions for the reaction between sodium and oxygen?

A

Vigorously

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17
Q

What are the conditions for the reaction between magnesium and oxygen?

A

Vigorously

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18
Q

What are the conditions for the reaction between aluminium and oxygen?

A

Powdered Al

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19
Q

What are the conditions for the reaction between silicon and oxygen?

A

Powdered Si
Heat strongly

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20
Q

What are the conditions for the reaction between phosphorus and oxygen?

A

Heated

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21
Q

What are the conditions for the reaction between sulfur and oxygen?

A

Powdered S heated

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22
Q

What colour flame is produced in the reaction between sodium and oxygen?

A

Bright yellow flame

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23
Q

What colour flame is produced in the reaction between magnesium and oxygen?

A

Bright white flame

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24
Q

What colour flame is produced in the reaction between aluminium and oxygen?

A

Bright white flame

25
What colour flame is produced in the reaction between silicon and oxygen?
Bright white sparkles
26
What colour flame is produced in the reaction between phosphorus and oxygen?
Yellow or white flame
27
What colour flame is produced in the reaction between sulfur and oxygen?
Blue flame
28
What is produced in reaction between sodium and oxygen?
White solid
29
What is produced in reaction between magnesium and oxygen?
White solid
30
What is produced in reaction between aluminium and oxygen?
White powder
31
What is produced in reaction between silicon and oxygen?
White powder
32
What is produced in reaction between phosphorus and oxygen?
White clouds
33
What is produced in reaction between sulfur and oxygen?
Toxic fumes
34
What structure does silicon oxide have?
Giant covalent structure
35
What does melting point indicate?
Forces of attraction that exist between ions, atoms and molecules
36
Which period 3 oxides are ionic?
Sodium oxide Magnesium oxide Aluminium oxide
37
What melting point do the ionic period 3 oxides have? Why?
High Due to giant lattice structures
38
What melting point does silicon dioxide have? Why?
High Many strong covalent bonds within giant structure
39
Which period 3 oxides show a simple covalent structure?
Phosphorus oxide Sulfur dioxide Sulfur trioxide
40
What melting point do simple covalent period 3 oxides have? Why?
Low Small oxides with weak intermolecular forces
41
What happens when ionic oxides of sodium and magnesium react with water?
Oxide ions become hydroxide ions Produce alkaline solutions
42
What happens when covalent oxides of phosphorus and sulfur react with water?
Oxides react to form acid which donates H+ ions to water Produce acidic solutions
43
What happens when oxides of aluminium and silicon react with water?
Both are insoluble
44
What happens when aluminium and silicon react with alkaline solution?
Act as base and form salt
45
What happens when aluminium react with acidic solutions?
Form salt and water
46
What does the behaviour of aluminium with alkaline and acidic solutions show?
Bonding is neither purely ionic or covalent Exhibits amphoteric character
47
What is the equation for the reaction between sodium oxide and water?
Na₂O (s) + H₂O (l) → 2NaOH (aq)
48
What is the equation for the reaction between magnesium oxide and water?
MgO (s) + H₂O (l) → Mg(OH)₂ (aq)
49
What is the equation for the reaction between aluminium oxide and water?
No reaction
50
What is the equation for the reaction between silicon oxide and water?
No reaction
51
What is the equation for the reaction between phosphorus oxide and water?
P₄O₁₀ (s) + 6H₂O (l) → 4H₃PO₄ (aq)
52
What is the equation for the reaction between sulfur dioxide and water?
SO₂ (g) + H₂O (l) → H₂SO₃ (aq)
53
What is the equation for the reaction between sulfur trioxide and water?
SO₃ (g) + H₂O (l) → H₂SO₄ (aq)
54
How do metal oxides react with water?
Form strongly alkaline solution
55
How do non-metal oxides react with water?
Form acidic solutions
56
How do middle of the periodic table oxides react with water?
No reaction
57
Why is aluminium oxide amphoteric?
Can act as both base and acid
58
Are period 3 metal oxides basic or acidic?
Basic
59
Are period 3 non-metal oxides basic or acidic?
Acidic

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