Chapter 21:Fuels and Heats of Reactions Flashcards
Organic Chemistry
is the study of the compounds of carbon
Hydrocarbon
Is a compound that contains carbon and hydrogen only
Fossil Fuels
are fuels that were formed from the remains of plants and animals that lived millions of years ago
Saturated Compound
is one in which there are only single bonds between the atoms in the molecule
Structural Isomers
are compounds with same molecular formula but different structural formulas.
Unsaturated Compound
is one that contains one or more double or triple bonds between the atoms in the molecule
Homologous Series
A series of compounds of similar chemical properties
Showing gradations in physical properties
Having a general formula for its members
Each member having a similar method of preparation
Each member differin from the previous member by a (CH2) unit
Aromatic Compounds
are compounds that contain a benzene ring structure in their molecules.
Aliphatic Compound
is an organic compound that consists of open chains of carbon atoms and closed chain compounds that resemble them in chemical properties.
Auto-ignition
is premature of the petrol-air mixture before normal ignition of the engine by a spark takes place
Octane Number
Of a fuel is a measure of the tendency of a fule to resist knocking
Heat of Reaction
is the heat change when the numbers of moles of reactants indicated in the balanced equation for the reaction react completely
Heat of Combustion
of a substance is the heat change when one mole if the substance is completely burned in excess oxygen.
Kilogram Calorific Value
of a fuel is the heat change produced when 1kg of the fuel is completely burned in oxygen
Bond Energy
is the average energy
required to break one mole of a particular covalent bond and to seperate the neutral atoms completely from each other
