Testing for Alkenes: The Bromine Water Test
Part of Alkenes · GCSE GCSE Chemistry revision
This required practical covers Testing for Alkenes: The Bromine Water Test 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 5 of 14 in this topic. Revise both the method and the reason for each step, because practical questions often test understanding rather than pure recall.
Topic position
Section 5 of 14
Practice
20 questions
Recall
15 flashcards
🧪 Testing for Alkenes: The Bromine Water Test
This is THE classic test for unsaturation — you MUST know this!
Add a few drops of bromine water (orange/brown solution) to your sample
Bromine water turns colourless (decolourised)
Addition reaction: C=C + Br₂ → C-CBr-CBr (dibromoalkane)
Bromine water stays orange (no reaction)
Alkanes don't have C=C bonds to react with
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