Question

i) Homopolymers are formed from _____.

only one type of monomer

different monomers with similar structures

two monomers reacting via HOMO-LUMO interactions

two or more different monomers

ii) In an alternating copolymer, _____.

two monomers alternate in the polymer backbone

the polymer alternates between two solid phases

the polymer alternates between the liquid and the solid phase

three monomers appear randomly in the polymer backbone

iii) A copolymer in which there are groups of each kind of monomer is called _____.

a random copolymer

a block copolymer

a group copolymer

an alternating copolymer

a graft copolymer

iv) The regions of the polymer in which the chains are highly ordered with respect to one another are _____.

called elastomeric regions

called crystallites

found only at the ends of the polymer chains

called thermoset regions