Chemical Bonding

Question 1

What is ionic bonding?

Answer 1

metal + non-metal (except for H & NH4)
Strong electrostatic attraction

Question 2

What does ionic bonding do with its electrons?

Answer 2

gives/takes

Question 3

What does ionic bonding produce?

Answer 3

giant structures

Question 4

What are the characteristics of giant structures?

Answer 4

-don’t conduct electricity
-brittle
-ions aren’t free to move
-melting/boiling points are high (need strong forces to break bonds)

Question 5

What does metallic bonding produce?

Answer 5

alloys

Question 6

What is an alloy?

Answer 6

mix of metal and 1 or more elements

Question 7

Why are alloys strong?

Answer 7

atoms are different sizes so slippage of layers is restricted

Question 8

What is metallic bonding?

Answer 8

giant lattice of positive ions held together by sea of delocalised electrons
Strong electrostatic attraction between positive ions & electrons

Question 9

What happens if the charge is higher in metallic bonding?

Answer 9

giant lattice of positive ions held together by sea of delocalised electrons
Strong electrostatic attraction between positive ions & electrons

Question 10

What is covalent bonding?

Answer 10

Non metal + non metal
Strong electrostatic attraction between positive nuclei of atom & shared pair of electrons

Question 11

What is a diatomic molecule?

Answer 11

2 of the same atom bonded together (e.g. Cl2, H2)