CAIE IGCSE Chemistry 11.1.6 An unsaturated compound has molecules

Cambridge IGCSE Chemistry 0620 syllabus for exams in 2026, 2027 and 20282026–2028

Practise identifying unsaturated organic compounds by spotting carbon-carbon bonds that are not single in formulae and structures.

How this is tested

define unsaturated by stating that not all carbon-carbon bonds are single bonds

[Maximum number: 1]

Sulfur dioxide, $\mathrm{SO}_{2}$ , is used in the manufacture of sulfuric acid.

When propan-1-ol is heated with concentrated sulfuric acid as a catalyst an unsaturated hydrocarbon of relative molecular mass 42 is formed and one other product.

What is meant by the term unsaturated?

How this is tested

Question 3(d)(i)