UNDERSTAND POLYMER

Which of the following is the best definition of a polymer?

• A single macro molecule composed of different atoms.

• A large macromolecule made up of repeating smaller units

• A small molecule made from various functional groups

• A molecule that only contains carbon and hydrogen atoms.

What is the structure of vinyl monomers?

• CH₃-CH₂

• CH₂=CHX

• C≡C

• CH₂-CH₂

Which of the following is an example of a vinyl polymer?

• Polyethylene

• Polysaccharide

• Polystyrene

• polycarbonate

What type of polymer is formed from one kind of monomer?

• Homopolymers

• Terpolymers

• Oligomers

• Copolymers

What is a thermoplastic?

• A polymer that is always rigid

• A linear or branched polymer

• A polymer that cannot be remolded

• A polymer that is soluble in water

Which arrangement describes isotactic polypropylene?

• Groups on alternating sides

• Random arrangement of groups

• No specific arrangement

• Groups on the same side

What is the main feature of vinyl polymers?

• Presence of only single bonds

• Absence of functional groups

• Presence of a triple bond

• Presence of a carbon-carbon double bond

What type of polymer is a thermoset?

• Linear polymer

• Network polymer

• Branched polymer

• Elastomer

Which of the following characteristics is common to synthetic polymers like polyethylene and polypropylene?

• They are all biodegradable

• They are made from renewable resources.

• They are often derived from petrochemical sources.

• They are often derived from petrochemical sources

Which of the following is a characteristic of syndiotactic polymers?

• Regular alternation of groups

• All groups on one side

• No specific arrangement

• Random arrangement