Chemistry · Oct / Nov 2024 · Paper 41 · Question 6
0620
As printed in the paper
The question as text
Natural polyamides are polymers made from amino acid monomers.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
6(a)[1]
condensation
6(b)[1]
proteins
6(c)[3]
(3)
M1 NH2 group displayed
M2 COOH group displayed
M3 use of R
6(d)[3]
M1 correct amide link between any two blocks showing all atoms and all bonds
M2 identical orientation of inter-block amide links including terminal groups with correct orientation
M3 continuation bonds on polymer
6(e)[2]
M1 distance travelled by substance
M2 distance travelled by solvent
6(f)(i)[1]
pencil is insoluble (in solvent)
6(f)(ii)[1]
locating agent
6(f)(iii)[1]
same Rf value
6(f)(iv)[1]
use a different solvent
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.