grade 12 chem chap 2

Question 1

polyethene

Answer 1

is used in plastic bags and bottles and toys

Question 2

polytetrafluoroethene

Answer 2

Is teflon very nonreactive and used to coat nonstick pans

Question 3

polypropene

Answer 3

is used to make rope carpet toys packaging film some yogurt containers caps medicine bottles and straws the methyl groups give the polymer added strength

Question 4

Polystyrene

Answer 4

Is made from styrene (vinyl benzene) is used to make insulation, food/beverage containers called styrofoam when air is injected dvd cases disposable cutlery

Question 5

Polyvinyl chloride

Answer 5

Is a polymer of chloroethene and is used tomake pipes floor tiles clothing as waterproof coating and reusable bags

Question 6

what is a polyester vs a polyamide

Answer 6

What is the difference between Polyester and Polyamide? In polyesters, ester functional group is present whereas in polyamides, amide functional group is present. The monomer of polyester should have a carboxylic group and a hydroxyl group, whereas polyamide monomer should have a carboxylic group and an amine group.

Question 7

what numbers can we recycle

Answer 7

1 and #2

Question 8

what are the three things glucose can be converted into

Answer 8

cellulose starch and glycogen

Question 9

cellulose

Answer 9

we cant digest lack the enzymes essential for breaking the beta-acetyl linkages. The undigested cellulose acts as fibre that aids in the functioning of the intestinal tract.

Question 10

starch

Answer 10

we can digest it is present in potatoes rice bread and pasta

Question 11

glycogen

Answer 11

branchedd and storees energy in animal cells excess carbs are stored as this

Question 12

hydrophyllic vs hydrophobic

Answer 12

phobic water hating (nonpolar) and phyllic water loving (polar)

Question 13

what is the monomer of carbohydrates

Answer 13

glucose

Question 14

what is the primary structure of a protein

Answer 14

The linear sequence of amino acids within a protein is considered the primary structure

Question 15

what is the monomer of dna

Answer 15

nucleotides

Question 16

what is a nucleotide made of

Answer 16

a five carbon sugar a nitrogenous base and phosphate group

Question 17

what is the difference copolymer and homopolymer

Answer 17

he main difference between homopolymer and copolymer is that homopolymers are produced by using a single type of monomer, whereas copolymers are formed by using two different types of monomers.

Question 18

what is the monomer of a protein

Answer 18

an amino acid

Question 19

how are proteins formed and what is this linkage called

Answer 19

they are formed from a condensation reaction and it is called a peptide bond (two amino acids dipeptide)

Question 20

plasticisers

Answer 20

can be added to increase flexibility

Question 21

phthalate

Answer 21

linked to neg health effects which is widely used

Question 22

cross linking

Answer 22

when covalent bonds form between polymer chains to form networks

Question 23

cross linking

Answer 23

when covalent bonds form between polymer chains to form networks making the polymer more ridgid and inflexible they will not soften at high temperatures and are called thermoset polymers

Question 24

vulcanization

Answer 24

involves sulfer to sulfer crosslinks to make a tougher rubber used in tires

Question 25

what are condensation polymers

Answer 25

result of a condensation reaction removal of h2o either an ester or amide linkage

Question 26

nylon

Answer 26

is a polyamide ccopolymer and is used in clothing ropes nets and tents

Question 27

when naming amide linkages what do the two numbers mean in order

Answer 27

the first number is the length of the amine and the carboxylic acid number is the length of the carboxylic acid