3.1.3.1 Ionic Bonding Flashcards Preview

AQA A Level Chemistry > 3.1.3.1 Ionic Bonding > Flashcards

Flashcards in 3.1.3.1 Ionic Bonding Deck (12)
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1
Q

What happens to ionic compounds in water?

A

They dissociate

2
Q

What are the properties of ionic compounds?

A

High melting point
Only conduct electricity when molten or dissolved in water
Soluble in water
Brittle (shatter easily)

3
Q

How is an ionic bond formed?

A

Between metals and non-metals
Electrons are transferred from metal to non-metal atoms
Positive and negative ions are formed
Ions are attracted by electrostatic forces

4
Q

What is the structure of an giant ionic structure?

A

Forms a regular lattice where each positive ion attracts four negative ions

5
Q

Do giant ionic lattices have high melting points?

A

They’re always solid at room temperature as enough energy must be supplied to break up the lattice of ions

6
Q

Do giant ionic lattices conduct electricity?

A

Only when molten or dissolved in water as the ions are free to move and carry a charge

7
Q

Are ionic lattices soluble?

A

Yes because water is a polar molecule so it attracts the molecule

8
Q

What are lattices?

A

Repeating structure

9
Q

Why do metals form positive ions and non-metals form negative ions?

A

Elements on the same row increase in charge from left to right which means an electron is more likely to be closer to the nucleus and so energetically, it is better for metals to lose electrons and nonmetals to gain electrons

10
Q

Why is an ionic bond formed?

A

Because of the opposing charges

11
Q

Are there any molecules in a lattice?

A

No

12
Q

What can ionic solids dissolve in?

A

Polar solvents

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