Ionic Bonding [C]

Question 1

What are the ways atoms can be joined?

Answer 1

Metal + Non-Metal = Ionic Bonding
Non-Metals only = Covalent Bonding
Metal + Metal = Metallic Bonding

Question 2

Ionic bonding is the electrostatic attraction between ________________________________________

Answer 2

Positive and negative ions

Question 3

How are ionic compounds arranged?

Think of structure and ions

Answer 3

They have giant structures
Ions are arranged in a lattice

Question 4

What are the names for positive and negative ions?

Answer 4

+ ions = Cations
- ions = Anions

Question 5

What are some facts about cations?

Think about charges

Answer 5

Metal atoms lose electrons to become positive
Their charge depends on their group number (group 2, 2+ charge, group 3, 3+ charge)
Transition metals can have different charges

Question 6

What are some facts about anions?

Think about polyatomic ions

Answer 6

Non metal atoms gain electrons
8 - group number = the charge of atom

Anions have polyatomic ions:
CO3(2-) = Carbonate
SO4(2-) = Sulphate
NO3(-) = Nitrate
OH(-) = Hydroxide

Question 7

What is the attraction of atoms dependant on?

Answer 7

Size - Smaller ions have more attraction due to less distance
Charge - Larger differences in charges have more attraction