Saturated hydrocarbons
Only contain single bonds
What is the functional group of alkenes?
Carbon-carbon double bond
Unsaturated hydrocarbons
Do not contain only single bonds
How do you test a sample for alkenes?
Mix the same liquid with bromine water in the absence of UV light. If it remains orange no addition reaction has occurred and therefore only alkanes are present. If it turns colourless, an addition reaction has occurred and therefore the sample contained some alkenes