Ions & Ionic Bonding

Question 1

Explain why ionic substances conduct electricity when molten

Answer 1

Because the ions are free to move and carry charge

Question 2

Explain why ionic substances do not conduct electricity when solid

Answer 2

Because the ions are not free to move, so charge cannot flow

Question 3

2 properties of ionic substances

Answer 3

High melting and boiling points

Only conduct electricity when molten or in solution

Question 4

Describe the structure of a giant ionic lattice

Answer 4

3D network of alternating positive and negative ions held together by the electrostatic force of attraction

Question 5

Explain why ionic substances have high melting points

Answer 5

Strong electrostatic force of attraction
Between oppositely charge ions
Which requires a lot of energy to break

Question 6

Explain in terms of electrons what occurs when lithium reacts with chlorine to form lithium chloride

Answer 6

One electron is transferred from a lithium atom to a chlorine atom
The ions have full outer shells
The ions are then attracted to each other by the electrostatic force of attraction

Question 7

Explain why non metals ions do not form ionic ones with each other

Answer 7

Non metal ions form negative charges so would repel

Question 8

Name type of structure that is formed when metals and non metals react together

Answer 8

Giant ionic structure

Question 9

Explain why atoms transfer electrons in ionic bonding

Answer 9

So the atoms can have full outer shells

Question 10

Molten

Answer 10

Melted

Question 11

Alloy

Answer 11

A mixture of metals