Unit 18 polymer

Question 1

What is a polymer

Answer 1

Any substance containing very large molecules, formed when lots of small molecules join together

Question 2

What happens in addition polymerisation

Answer 2

Double bonds in molecules break, and the molecules add on to each other.

Question 3

What are monomers

Answer 3

small molecules that join together to form polymers

Question 4

What is required to monomers to do addition polymerisation

Answer 4

C=C double bond

Question 5

What is condensation polymerisation

Answer 5

Molecules join to make very large molecules, by eliminating small molecules ( such as water molecule)

Question 6

Does condensation polymerisation depends on C=C double bond

Answer 6

no

Question 7

What kind of linkage does terylene contain

Answer 7

ester linkage

Question 8

What kind of linkage does nylon contain

Answer 8

amide linkage

Question 9

Uses of nylon

Answer 9

Making ropes

Question 10

Uses of terylene

Answer 10

Making shirts and other clothing

Question 11

Properties of plastic

Answer 11

Does not conduct electricity or heat
unreactive
light
don't break when you drop them
strong
do not catch fire easily

Question 12

What are monomers of polyesters

Answer 12

dicarboxylic acid and two alcohol groups

Question 13

Uses of high-density polythene and its properties

Answer 13

hard and strong, used for making bowls and dustbins

Question 14

Uses of low denisty polythene

Answer 14

plastic

Question 15

Protein has the same amide linkage with _____

Answer 15

nylon

Question 16

What is hydrolysis

Answer 16

A reaction in which a molecule breaks down through reaction with water

Question 17

What is the condition for the hydrolysis of carbohydrates without enzymes

Answer 17

Heat with dilute HCl acid

Question 18

What is the condition for the hydrolysis of proteins without enzymes

Answer 18

Boil with 6M HCl acid for 24 hours

Question 19

Amino acids and sugars are colourless, how to identify them

Answer 19

using locating agent

Question 20

What is a complex carbohydrate

Answer 20

A polymer formed from simple sugar monomers

Question 21

What is eliminated during condensation polymerisation of simple sugar

Answer 21

water molecules