Polymers And Giant Covalent Structures

Question 1

What are polymers

Answer 1

Long chains of repeating units

Question 2

What type of bonds are atoms in a polymer joined by

Answer 2

Covalent bonds

Question 3

How do you write a molecular formula for polymer

Answer 3

You write the molecular formula in a bracket and then putting an n outside the bracket

Question 4

Why are most polymer molecules solid at room temperature

Answer 4

The intermolecular forces between the polymer molecules so what energy is needed to break them

Question 5

Intermoleculer forces polymer molecules

Answer 5

The inter molecules are larger than simple molecules but weaker than giant or ionic molecules

Question 6

Properties of giant covalent

Answer 6

• they have a high melting point and a high boiling point so a lot of energy is needed to break the covalent bonds between the atoms
• No charge particles free to move so they can’t conduct energy even when they are molten

Question 7

Example of carbon only giant covalent bonds

Answer 7

Diamond and graphite

Question 8

Properties of diamond

Answer 8

Each carbon atom forms 4 covalent bonds in a rigid giant covalent structure

Question 9

Properties of graphite

Answer 9

Each carbon atom forms three covalent bonds created in hexagons. Each carbon atom has 1 free electron

Question 10

Properties of silica or silicon dioxide

Answer 10

What sound is made out of and each grain of sand is made up of and each giant structure of silicone and oxygen