CAIE IGCSE Chemistry 11.3.3 Hydrocarbons are compounds that
Practise deciding whether a formula or fuel is a hydrocarbon by checking that the compound contains carbon and hydrogen only.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Practise deciding whether a formula or fuel is a hydrocarbon by checking that the compound contains carbon and hydrogen only.
The table shows the structures of four hydrocarbons.

Why are compounds P, Q, R and S known as hydrocarbons?
(they contain) carbon and hydrogen (atoms)
only