What is an unsaturated hydrocarbon?

Unsaturated hydrocarbons contain at least one carbon carbon double bond, the simplest is the alkene. They are more reactive than saturated hydrocarbons because they have the ability to undergo addition reactions by opening up the double bond. Doing so frees electrons from the double bond so that they can form new covalent bonds with other atoms.

CA

Related Chemistry GCSE answers

All answers ▸

Describe the difference between ionic and covalent bonds


a) Complete the balanced symbol equations: (2 marks) H2SO4 + NaOH  HCl + Mg(OH)2 


Balance the chemical equation: AgI + Na2S → Ag2S + NaI


Explain what oxidation and reduction means in terms of electrons.