Terms

Question 0

Another name for a polymeric molecule, huge molecule

Answer 0

Macromolecule

Question 1

What is the smallest unit making up a polymeric molecule?

Answer 1

A Mer

Question 2

The structure inside the parentheses is the styrene unit, the repeat unity of the polymer. The small subscript n means the molecule is repeated.

Answer 2

-(-CH2-ĆH-)n-

Question 3

One Mer- one part of the many that make up a polymer; the chemical that is polymerized to make a polymer chain.

Answer 3

Monomers

Question 4

Every unit is bonded on the other side with the same unit resulting in a chain of styrenes – ex. Styrene unit

Answer 4

Repeat unit

Question 5

The chemical process of monomers reacting with each other to form a polymeric chain

Answer 5

Polymerization

Question 6

The two or more monomers are distributed randomly with no particular pattern.

Answer 6

Random copolymer

Question 7

The two or more monomers in this polymer are distributed in a perfectly repeating pattern

Answer 7

Perfectly alternating copolymer

Question 8

A compound with far fewer monomer units in a chain than a polymer; it has a much lower molecular weight compared to a polymer

Answer 8

Oligomers

Question 9

All monomers in the polymer chain are the same; if the monomer were styrene, the homopolymer would be named polystyrene.

Answer 9

Homopolymer

Question 10

Describes every type of polymer except homopolymer; two or more different types of monomers make up the chain; three distinct distributions can take place.

Answer 10

Copolymer

Question 11

Polymer molecules shaped like a star.

Answer 11

Star-shaped molecule

Question 12

Polymer of three polymers; considered a copolymer.

Answer 12

Terpolymer

Question 13

Polymerization of four polymers; considered a copolymer. Not the same as a quatermer which had four mers and is an oligomer

Answer 13

Quaterpolymer

Question 14

Are not only dependent on a polymers chemical composition, but also structure of the polymer molecule

Answer 14

Properties of polymers

Question 15

Polymer molecules that resemble trees because they possess a high number of branches

Answer 15

Highly branched

Question 16

Long segments of one monomer are bonded to long segments of another monomer in a branch like structure

Answer 16

Graft copolymer

Question 17

Long segments of one monomer are bonded to long segments of another monomer forming a long chain

Answer 17

Block copolymer

Question 18

Every unit is bonded on the other side with the same unit resulting in a chain of styrenes - ex. Styrene unit

Answer 18

Repeat unit

Question 19

Is the same as molar mass distribution; the larger this ratio, the greater the distribution of chain lengths in the sample. The polymer a on the graph on the polymer chemistry text page 16 had a narrow polydispersity while the polymer b on the same graph has a large polydispersity.

Answer 19

Polydispersity

Question 20

One Mer- one part of the many that make up a polymer; the chemical that is polymerized to make a polymer chain

Answer 20

Monomer

Question 21

Molar mass = DP x FM, ex. A polystyrene with a DP of 50 and FM of 104g/mil has a molar mass = 50 x 104g/mol = 5200g/mol.

Answer 21

Molar mass

Question 22

The ratio Mw / Mn

Answer 22

Molar mass distribution

Question 23

Another way of expressing polymer molar mass; Mw is always higher than Mn

Answer 23

Weight-average molar mass ( Mw )

Question 24

The average molar mass of each polymer chain

Answer 24

Number-average molar mass ( Mn )