Alkenes

• Alkenes have the general formula C(n)H(2n) and contain a double bond.
• The double bond enables electrophilic addition reactions and polymerisation.
• The stability of the carbocation formed determines the products formed.
• Alkenes can be tested using bromine water, which turns colourless.
• Key mechanisms involving alkenes include electophilic addition reactions with hydrogen bromide, sulfuric acid, and bromine.