DP Chemistry (last assessment 2024)

Test builder »

Question 19M.3.hl.TZ1.a

Select a Test
Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.3.hl.TZ1.a
Level hl Paper 3 Time zone TZ1
Command term Describe Question number a Adapted from N/A
a.
[Maximum mark: 2]
19M.3.hl.TZ1.a

Nanotechnology has allowed the manipulation of materials on the atomic level.

Describe the structure and bonding of a carbon nanotube.

 

Structure:

Bonding:

[2]

Markscheme

Structure:
giant covalent/network covalent    [✔]

Bonding:
each carbon covalently bonded to 3 other carbons
OR
each bond has order of 1.5    [✔]

 

Note: Accept “cylindrical/tube shaped”.

Accept “has delocalized electrons” OR “has sp2 hybridization”.

Examiners report

Describing the structure and bonding of a carbon nanotube was generally answered satisfactorily, although some candidates simply said the bonding was covalent with no further detail.

Syllabus sections