Fuels and Heats of Reactions - definitions

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  • Created by: Marie
  • Created on: 30-03-10 17:43

Fuels and Heats of Reaction

  • Homologous series - A homologous series is a family of organic compounds with the same general formula, similar chemical properties and successive members differing by CH4.
  • Structural isomers - Structural isomers are compounds with the same molecular formula but different structural formulas.
  • Saturated molecules - Molecules that contain only single covalent bonds are saturated.
  • Unsaturated molecules - Molecules that contain a double or triple bond are unsaturated.
  • Aliphatic compounds - An aliphatic compound is an organic compound that consists of open chains of carbon atoms and closed chain compounds (rings) that resemble them in chemical properties.
  • Aromatic compounds - Aromatic compounds are compounds that contain a benzene ring structure in their molecules.
  • Octane number - The octane number of a fuel is a measure of the tendency of the fuel to resist knocking or auto-ignition.
  • Catalytic cracking - Catalytic cracking is the breaking down of long-chain hydrocarbon molecules into short-chain molecules for which there is greater demand.
  • Exothermic- A reaction in which heat is given out is exothermic.


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