Addition Reactions of Alkenes
Part of Alkenes · GCSE GCSE Chemistry revision
This deep dive covers Addition Reactions of Alkenes within Alkenes for GCSE Chemistry. Revise Alkenes in Organic Chemistry for GCSE Chemistry with 20 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 6 of 14 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 6 of 14
Practice
20 questions
Recall
15 flashcards
⚗️ Addition Reactions of Alkenes
Alkenes undergo addition reactions — atoms ADD ACROSS the double bond, breaking it and forming two single bonds.
1. Addition of Hydrogen (Hydrogenation)
C₂H₄ + H₂ → C₂H₆
Conditions: Ni catalyst, 150°C
2. Addition of Bromine (Bromination)
C₂H₄ + Br₂ → C₂H₄Br₂
Room temperature, no catalyst needed
3. Addition of Water (Hydration)
C₂H₄ + H₂O → C₂H₅OH
Conditions: Phosphoric acid catalyst, 300°C, 70 atm pressure
Keep building this topic
Read this section alongside the surrounding pages in Alkenes. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Alkenes
What is the general formula for alkenes?
Explain what is meant by the term 'unsaturated' when applied to alkenes.
Quick Recall Flashcards
20 questions on Alkenes — practise free
Instant marking, adaptive difficulty, and 15 spaced repetition flashcards. Free until your GCSEs.
Try PrepWise Free