DP Chemistry (first assessment 2025)

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Question 21M.2.SL.TZ1.e(iii)

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.2.SL.TZ1.e(iii)
Level	SL	Paper	2	Time zone	TZ1
Command term	Suggest	Question number	e(iii)	Adapted from	N/A

e(iii).

[Maximum mark: 1]

21M.2.SL.TZ1.e(iii)

Suggest why this process might raise environmental concerns.

[1]

Markscheme

sulfur dioxide/SO₂ causes acid rain ✔

Accept sulfur dioxide/SO₂/dust causes respiratory problems
Do not accept just “causes respiratory problems” or “causes acid rain”.

Syllabus sections

Structure 3. Classification of matter » Structure 3.1—The periodic table: Classification of elements » Structure 3.1.5—Metallic and non-metallic properties show a continuum. This includes the trend from basic metal oxides through amphoteric to acidic non-metal oxides. Deduce equations for the reactions with water of the oxides of group 1 and group 2 metals, carbon and sulfur.