year 10

• • Boiling point of alkanes increase with chain length because the intermolecular forces between the molecules increase
  • Branched alkanes have lower boiling points as there is reduced contact between the molecules
• Alkenes are unsaturated hydrocarbons that contain at least one carbon-carbon double bond (C=C)
• Alkenes can be represented by structural formulas or condensed formulas
• The general formula for an alkene is CnH2n
• Alkenes are more reactive than alkanes due to their polarised covalent bonds, which allows them to undergo addition reactions.
• Alkenes can add water to form alcohols through hydration reactions.
• Alkenes can also add halogens such as chlorine to form haloalkanes.