2.4 Ions And Ionic Bonding

Question 1

What is an ionic bond

Answer 1

A strong Electrostatic attraction between oppositely charged ions in a crystal lattice

Question 2

What are chemical bonds

Answer 2

Forces of attraction that brings ions,atoms and molecules together

Question 3

What are the 3 main types of bonds

Answer 3

Ionic-m+nm
Metallic-M+M
Covalent-NM+NM

Question 4

What do elements bond

Answer 4

To gain a full outer shell/A low energy state and therefore be more stable

Question 5

How are full outer shells obtained

Answer 5

By oxidation(losing electrons)-cations (usually m)
Or reduction(gaining of electrons)-anions(usually nm)

Question 6

What ions does group 8 form

Answer 6

They dont as they already have a full,stable outer shell

Question 7

What is a crystal lattice

Answer 7

A 3D arrangement of particles, atoms or ions that usually occurs between metal and non metal and involves the transfer of electrons where the metal donates its délocalisée electrons to the non metal to form an ion

Question 8

What is the charge of an ionic crystal

Answer 8

Neutral

Question 9

What is a giant lattice structure of ionic compounds

Answer 9

A regular arrangement of alternating positive and negative ions. (Neutral overall)

Question 10

Name 5 properties of ionic compounds and reasons

Answer 10

1. High MP+BO-strong electrostatic forces between ions
2. Solid ionic substances do not conduct- no free ions to carry charge
3. Molten substances do conduct- ions able to move freely and carry charge
   4.soluble in water
   5.crystals are brittle

Question 11

Why can molten ionic substances conduct electricity

Answer 11

As the crystal lattice has been broken and ions are now able to move freely and carry charge