Chapter 12, Problem 50P

Interpretation Introduction

(a)

Interpretation:

True or false.

Ethylene contains one carbon-carbon double bond, and polyethylene contains many carbon-carbon double bonds.

Concept Introduction:

Procedures where single molecules or monomers such as hydrocarbons and amino acids bond to form polymers is known as polymerization. Below are the two types of polymers:

• Natural polymers − These polymers consist rubber, cellulose and deoxyribonucleic acid (DNA).
• Manmade or artificial polymer − These polymers are found within PVC i.e. polyvinyl chloride and other plastic.

Interpretation Introduction

(b)

Interpretation:

True or false.

All c-c bond angles in both LDPE and HDPE are approximately 120⁰.

Concept Introduction:

Procedures where single molecules or monomers such as hydrocarbons and amino acids bond to form polymers is known as polymerization. Below are the two types of polymers:

• Natural polymers − These polymers consist rubber, cellulose and deoxyribonucleic acid (DNA).
• Manmade or artificial polymer − These polymers are found within PVC i.e. polyvinyl chloride and other plastic.

Interpretation Introduction

(c)

Interpretation:

True or false.

Low-density polyethylene is a highly branched polymer.

Concept Introduction:

Procedures where single molecules or monomers such as hydrocarbons and amino acids bond to form polymers is known as polymerization. Below are the two types of polymers:

• Natural polymers − These polymers consist rubber, cellulose and deoxyribonucleic acid (DNA).
• Manmade or artificial polymer − These polymers are found within PVC i.e. polyvinyl chloride and other plastic.

Interpretation Introduction

(d)

Interpretation:

True or false.

High density polyethylene consists of carbon chains with little branching.

Concept Introduction:

Procedures where single molecules or monomers such as hydrocarbons and amino acids bond to form polymers is known as polymerization. Below are the two types of polymers:

• Natural polymers − These polymers consist rubber, cellulose and deoxyribonucleic acid (DNA).
• Manmade or artificial polymer − These polymers are found within PVC i.e. polyvinyl chloride and other plastic.

Interpretation Introduction

(e)

Interpretation:

True or false.

The density of polyethylene polymers is directly related to the degree of chain branching, the lower the density of the polymer.

Concept Introduction:

Procedures where single molecules or monomers such as hydrocarbons and amino acids bond to form polymers is known as polymerization. Below are the two types of polymers:

• Natural polymers − These polymers consist rubber, cellulose and deoxyribonucleic acid (DNA).
• Manmade or artificial polymer − These polymers are found within PVC i.e. polyvinyl chloride and other plastic.

Interpretation Introduction

(f)

Interpretation:

True or false.

PS and PVC are currently recycled.

Concept introduction:

Procedures where single molecules or monomers such as hydrocarbons and amino acids bond to form polymers is known as polymerization. Below are the two types of polymers:

• Natural polymers − These polymers consist rubber, cellulose and deoxyribonucleic acid (DNA).
• Manmade or artificial polymer − These polymers are found within PVC i.e. polyvinyl chloride and other plastic.