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GCSE Chemistry COPY > C3.4 - Giant ionic structures > Flashcards

C3.4 - Giant ionic structures Flashcards

1
Q

What does an ionic compound consist of?

A

An ionic compound consists of a giant structure of ions arranged in a lattice

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2
Q

An ionic compound consists of a giant structure of ions arranged in a lattice.
What does the attractive electrostatic forces between the oppositely charged ions do?

A

The attractive electrostatic forces between the oppositely charged ions:

  1. Act in all directions
  2. Are very strong
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3
Q

An ionic compound consists of a giant structure of ions arranged in a lattice.
The attractive electrostatic forces between the oppositely charged ions act in all directions and are very strong.
What does this do?

A

The attractive electrostatic forces between the oppositely charged ions holds the ions in the lattice together very tightly

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4
Q

What does it take to break up a giant ionic lattice?

A

It takes a lot of energy to break up a giant ionic lattice

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5
Q

Why does it take a lot of energy to break up a giant ionic lattice?

A

It takes a lot of energy to break up a giant ionic lattice, because there are lots of strong ionic bonds to break

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6
Q

It takes a lot of energy to break up a giant ionic lattice, because there are lots of strong ionic bonds to break.
To separate the ions, you have to overcome all those electrostatic forces of attraction acting in all directions.
What does this mean?

A

This means that ionic compounds have high:

  1. Melting points
  2. Boiling points
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7
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become what?

A

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile

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8
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile and so can what?

A

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile and so can start to move around

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9
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile so can start to move around.
This is when the ionic solid melts and becomes a liquid. What can the ions do in this liquid?

A

The ions are free to move anywhere in this liquid

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10
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile so can start to move around.
This is when the ionic solid melts and becomes a liquid.
The ions are free to move anywhere in this liquid.
What are they attracted to?

A

The ions are attracted to oppositely charged electrodes held in the molten compound

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11
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile so can start to move around.
This is when the ionic solid melts and becomes a liquid.
The ions are free to move anywhere in this liquid.
They are attracted to oppositely charged electrodes held in the molten compound.
Therefore, what can they do?

A

Therefore, they can carry their electrical charge through the liquid

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12
Q

Why can a solid ionic compound not conduct electricity?

A

A solid ionic compound cannot conduct electricity, because its ions are held in fixed positions in the lattice

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13
Q

What can the ions in a solid ionic compound do?

A

The ions in a solid ionic compound:

  1. Cannot move around
  2. Can only vibrate ‘on the spot’
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14
Q

Why will a molten ionic compound conduct electricity?

A

A molten ionic compound will conduct electricity, because the ions:

  1. Are mobile
  2. Can carry an electrical charge
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15
Q

What does the regular arrangement of ions in the giant lattice result in ionic compounds forming?

A

The regular arrangement of ions in the giant lattice results in ionic compounds forming crystals

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16
Q

Many, but not all, ionic compounds will what?

A

Many, but not all, ionic compounds will dissolve in water

17
Q

What happens when an ionic compound is dissolved in water?

A

When an ionic compound is dissolved in water, the lattice is split up by the water molecules

18
Q

When an ionic compound is dissolved in water, the lattice is split up by the water molecules.
Then, what can the ions do?

A

Then, the ions are free to move around within the solution formed

19
Q

When an ionic compound is dissolved in water, the lattice is split up by the water molecules.
Then, the ions are free to move around within the solution formed.
What can they carry?

A

The ions can carry their charge to oppositely charged electrodes in the solution

20
Q

What will solutions of ionic compounds do, just as molten ionic compounds will?

A

Just as molten ionic compounds will conduct electricity, solutions of ionic compounds will also conduct electricity

21
Q

Why is it that just as molten ionic compounds will conduct electricity, solutions of ionic compounds will also conduct electricity?

A

Just as molten ionic compounds will conduct electricity, solutions of ionic compounds will also conduct electricity, because the ions are able to move to an oppositely charged electrode dipped in the solution

22
Q

What are the strong electrostatic forces of attraction between ions in a giant ionic lattice called?

A

The strong electrostatic forces of attraction between ions in a giant ionic lattice are called ionic bonds

23
Q

What does every ionic compound have?

A

Every ionic compound has a giant structure

24
Q

Every ionic compound has a giant structure.

What are the oppositely charged ions in these structures held together by?

A

The oppositely charged ions in these structures are held together by strong electrostatic forces of attraction

25
Q

Every ionic compound has a giant structure.
The oppositely charged ions in these structures are held together by strong electrostatic forces of attraction.
What do these do?

A

These act in all directions in the giant lattice

26
Q

In an ionic solid, ions are what in a giant lattice?

A

In an ionic solid, ions are fixed in position in a giant lattice

27
Q

In a molten ionic compound, the high temperature provides enough energy to do what?

A

In a molten ionic compound, the high temperature provides enough energy to overcome the many strong attractive forces between ions

28
Q

In an ionic compound in solution, water molecules do what?

A

In an ionic compound in solution, water molecules separate ions from the lattice

29
Q

It takes a lot of energy to break up a giant ionic lattice, because there are lots of strong ionic bonds to break.
To separate the ions, you have to do what?

A

To separate the ions, you have to overcome all those electrostatic forces of attraction acting in all directions

30
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile and so can what?

A

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile and so can start to move around

31
Q

Once you have supplied enough energy to separate the ions from the ionic lattice, they become mobile so can start to move around.
This is when what?

A

This is when the ionic solid melts and becomes a liquid

32
Q

Every ionic compound has a giant structure.
The oppositely charged ions in these structures are held together by strong electrostatic forces of attraction.
These act in all directions in the giant lattice, resulting in what?

A

These act in all directions in the giant lattice, resulting in relatively high melting points

33
Q

In an ionic solid, ions are fixed in position in a giant lattice.
They what, but cannot what?

A

The ions vibrate but cannot move around

34
Q

An ionic solid does not what?

A

An ionic solid does not conduct electricity

35
Q

Ions are what within a molten ionic compound?

A

Ions are free to move around within a molten compound

36
Q

A molten ionic compound does conduct what?

A

A molten ionic compound does conduct electricity

37
Q

In an ionic compound in solution, water molecules separate ions from the lattice.
Ions are what within the solution?

A

Ions are free to move around within the solution

38
Q

An ionic compound in solution does what?

A

An ionic compound in solution does conduct electricity

GCSE Chemistry COPY (70 decks)

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