Lesson 1: WHAT ALKENES?

· Belong to the homologous series of unsaturated hydrocarbons

i) Contain double covalent bonds between carbon atoms in molecules

ii) Contain only hydrogen and carbon atoms

· Ends with –ene

· General Formula: C₂H_2n

· The carbon-carbon double bond is formed by the sharing of two pairs of electrons between two carbon atoms

· The carbon-carbon double bond determines most of the chemical properties of alkenes

An unsaturated compound contains a carbon-carbon double (or triple) covalent bonds

First 3 alkenes:

C₂H_{4 Ethene}

_{C3H6 Propene}

12:05 AM