CAIE IGCSE Chemistry One-Product Addition Reactions
Practise defining addition reactions by two reactants forming one product and identifying the transformation of an alkene double bond into single bonds.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Practise defining addition reactions by two reactants forming one product and identifying the transformation of an alkene double bond into single bonds.
The table shows the structures of four hydrocarbons.

Compound R undergoes an addition reaction with bromine.
Why is this reaction an addition reaction?
only one product (compound) forms