DP Chemistry (last assessment 2024)
Question 18M.3.sl.TZ1.4b.ii
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.sl.TZ1.4b.ii |
| Level | sl | Paper | 3 | Time zone | TZ1 |
| Command term | State | Question number | b.ii | Adapted from | N/A |
b.ii.
[Maximum mark: 1]
18M.3.sl.TZ1.4b.ii
Both HDPE (high density polyethene) and LDPE (low density polyethene) are produced by the polymerization of ethene.
(b.ii)
State one way in which a physical property of HDPE, other than density, differs from that of LDPE as a result of this structural difference.
[1]
Markscheme
HDPE is more rigid/less flexible
OR
HDPE has a higher melting point
OR
HDPE has greater «tensile» strength
Accept “HDPE has lower ductility”.
[1 mark]
