Chemistry Topic Practice
Alkenes and Bromine Water | GCSE Chemistry Practice
Alkenes are unsaturated hydrocarbons that can be identified using bromine water.
What is the color change when an alkene reacts with bromine water?
What is Alkenes and Bromine Water | Practice?
"Hydrocarbons with at least one carbon-carbon double bond, making them more reactive than alkanes."
Unsaturated Bonds
Alkenes react with bromine water in an addition reaction.
Bromine water turns from orange/brown to COLORLESS.
Alkanes do not react with bromine water (it stays orange).
The general formula for alkenes is CnH2n.
Exam Tip
Unsaturated Fact: "Unsaturated" means the molecule has space for more atoms because of the double bond.
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