Edexcel IGCSE Chemistry Chapter 34 - Alkanes and Alkenes

Learn about alkanes and alkenes: alkanes are saturated hydrocarbons with single bonds, while alkenes are unsaturated hydrocarbons with carbon-carbon double bonds. Alkanes undergo substitution reactions with halogens under UV light, while alkenes participate in addition reactions, forming dihaloalkanes. Bromine water distinguishes alkenes by turning colorless, while alkanes remain unchanged.