Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Inorganic Chemistry > Period 3 > Flashcards

Period 3 Flashcards

(57 cards)

Start Studying
1
Q

Why is Na more reactive than Mg?

A

It takes less energy to lose one e- than to lose two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Generic equation for period 3 metal + water

A

Metal + water —-> metal hydroxide + Hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Observations for Na + water

Product

A

Exothermic

Gas produced

Colourless
Very alkaline solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Equation for Mg+ cold water

Observation and products

A

Mg+ 2H2O—-> Mg(OH)2 + H2

Minor bubbles
Sparingly soluble: weakly alkaline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Equation for Reaction of Mg and steam

A

Mg(g) + H2O(g) —> MgO(s) + H2(g)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Observation of mg and steam

A

White flame and white solid (fast reaction)

Basic solid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Equation and observations for Na and Oxygen

A

2Na + 1/2 O2 —-> Na2O

Yellow flame and yellow solid (reacts readily in air)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Equation and observations for Mg and Oxygen

A

Mg + 1/2 O2 —-> MgO

White flame

White solid (reacts readily in air)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Equation and observations for Al and Oxygen

Rate?

A

2Al + 3/2 O2 —-> Al2O3

Reacts slowly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Equation and observations for Phosphorus and Oxygen

Observations

A

P4 + 5O2 —-> P4O10

White smoke

White flame

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why is P4 kept in oil?

How else can it be stored?

A

P4 ignites spontaneously in air

Under water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Equation and observations for S and Oxygen

A

S+O2 —-> SO2

Blue flame
Choking gas
Reacts readily in air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Structure and bonding of Na2O and MgO

Acidic?

A

Giant ionic lattice

Ionic

Basic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Define ionic bonding

A

Strong electrostatic attraction between oppositely charged ions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Structure and bonding of Al2O3

A

Giant ionic lattice

Ionic with covalent character

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is the acidity of Al2O3

A

Amphoteric but does not dissolve in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Structure and bonding of SiO2

Is it acidic?

A

Macromolecular

Covalent bonds

Acidic but does not dissolve in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Structure and bonding of P4O10

Is it acidic or basic?

A

Simple molecular

Weak VdW forces between molecules

Acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Structure and bonding of SO2

Is it acidic or basic?

A

Simple molecular

Weak van der Waals’ forces between molecules

Acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Structure and bonding of SO3

Is it acidic or basic?

A

Simple molecular

Weak Van der Waals’ forces between the molecules

Acidic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Are ionic oxides acidic?

A

No they are basic - they contain oxide ions (O2-) which form OH- ions when dissolved in water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Give examples of ionic oxides

A

Na2O, MgO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the acidity of Al2O3?

24
Q

Which period three oxides are acidic?

Study These Flashcards
A

Macromolecular oxides

Simple molecular oxides

25
Why are ionic oxides basic?
They contain O2- which forms OH- ions in water
26
Equation for Na2O + water and give the acidity of the product
Na2O + H2O —-> 2NaOH Very alkaline
27
Equation for MgO + water and give the acidity of the product
MgO + H2O—-> Mg(OH)2 Alkaline but product is very sparingly soluble
28
Equation for Al2O3 + water and give the acidity of the product
Al2O3 is insoluble therefore no reaction with water Al2O3 forms a protective layer on the surface of Al Acidity: N/A
29
Equation for SiO2 + water and give the acidity of the product
SiO2 is insoluble (no reaction with water) N/A
30
Equation for P4O10 + water and give the acidity of the product
P4O10 + 6H2O —-> 4H3PO4 Acidic as phosphoric acid is formed
31
Give the structure of phosphoric acid
``` OH | O=P - OH | OH ```
32
What does phosphoric acid dissociate to?
``` O- | O=P — O- + 3H+ | O- ```
33
Equation for SO2 + water and give the acidity of the product
SO2 + H2O —-> H2SO3
34
Structure of sulphuric (IV) acid
``` OH | O=S: | OH ```
35
Equation for SO3 + water and give the acidity of the product
SO3 + H2O —-> H2SO4
36
Structure of sulphuric (VI) acid Give the formula
``` O || HO-S - OH || O ``` H2SO4
37
What is the formula of sulphuric (IV) acid?
H2SO3
38
Acid + base —->
Salt + water
39
Rate of Na2O + acid Exothermic or endothermic?
Fast Exothermic
40
Rate of MgO + acid
Slow
41
Reaction of Al2O3 with HCl
Al2O3 + 6HCl ——> 2AlCl3 + 3H2O
42
Reaction of Al2O3 with NaOH
Al2O3 + 2NaOH + 3H2O —> 2NaAl(OH)4
43
When Al2O3 acts as an acid what does the salt contain?
The Al(OH)4 - ion
44
When SiO2 reacts with bases what does the salt contain?
SiO3 2-
45
When P4O10 reacts with bases what does the salt contain?
PO4 3-
46
When SO2 reacts with bases what does the salt contain?
SO3 2-
47
When SO3 reacts with bases what does the salt contain?
SO4 2-
48
General equation for neutralisation in the absence of water
Acid + base —-> salt
49
6Na2O + P4O10 —->
4Na3PO4
50
What can P4O10 be written as when it is dissolved in water
H3PO4 (phosphoric acid)
51
What can P4O10 be written as when added to an aqueous base
H3PO4
52
What can SO2 be written as when added to an aqueous base
H2SO3
53
What can SO3 be written as when added to an aqueous base
H2SO4
54
What can SO2 be written as when it is dissolved in water
H2SO3
55
What can SO3 be written as when it is dissolved in water
H2SO4
56
How to convert an equation into an ionic equation
Split up aqueous ionic compounds (including acids) into separate ions Cancel out spectator ions (appear on both sides) Write final equation
57
Products of SiO2 and NaOH
Na2SiO3 and water

Inorganic Chemistry (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions