C2.1 And C2.2 Structure And Bonding

Question 1

Properties of ionic compounds?

Answer 1

High MP as strong electrostatic attractions

Soluble as they are attracted to water

Conducted when in solution as the electrons can move

Question 2

What’s covalent bonding?

Answer 2

Non metal and non metal

Sharing pairs of electrons

Question 3

Properties of covalent compounds?

Answer 3

Low MP as weak intermolecular forces

Not soluble

Not conductive

Question 4

What’s a macro molecule?

Answer 4

Giant covenant structure

Question 5

Describe diamond?

Answer 5

4 bonds
Tetrahedral
Strong bonds
Carbon
Covalent bond
Macro

Question 6

Describe graphite?

Answer 6

3 bonds
Layer
Hexagons
Weak intermolecular forces
Delocalised electrons

Question 7

What’s a fullerene?

Answer 7

Cage

Carbon

Question 8

What’s nano science?

Answer 8

Small structure
Cosmetics/medicine
Can cause properties to change

Question 9

What are thermosetting polymers?

Answer 9

Cross links
Strong bonds
Don’t change
Ionic interactions

Question 10

What are thermosoftening polymers?

Answer 10

Weak intermolecular forces
Long chains
Maluble

Question 11

What are HDPE?

Answer 11

High density polyethene

Broke with a catalyst and 50 degrees

Question 12

What are LDPE?

Answer 12

Low density polyethene

Broke with high pressure and oxygen

Question 13

What’s metallic bonding?

Answer 13

A lattice of positive ions in a sea of delocalised electrons

Question 14

Properties of metallic structures?

Answer 14

High MP as strong electrostatic attractions
Not soluble
Conductive

Question 15

What’s an alloy?

Answer 15

More than 1 metal

Question 16

Properties of alloys?

Answer 16

Strong
Hard
Not ductile
Layers don't slide
Different sizes

Question 17

What’s smart materials?

Answer 17

Metals that have 1 or more properties that can change

Question 18

What is ionic bonding?

Answer 18

The transfer of electrons from a metal to a non metal to produce a giant ionic lattice