Definition Of Combustible Substances

Definition Of Combustible Substances

A combustible substance is that which is capable of igniting and burning./p>

More About Combustible Substances

  • This is an important property to consider when a substance is used for construction or is being stored
  • It is also important in processes that produce combustible substances as a by-product
  • Special precautions are usually required for substances that are easily combustible
  • These measures may include installation of fire sprinklers or storage remote from possible sources of ignition
  • A chemical process in which a substance reacts with oxygen to give off light and heat is called as combustion
  • The substance that undergoes combustion is said to be combustible
  • It is also called as a fuel
  • Magnesium and charcoal are examples of combustible substances
  • Different substances catch fire at different temperatures
  • It is necessary for a substance to reach ignition temperature for it to burn
  • Combustion is the sequence of exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat and conversion of chemical species
  • The release of heat can produce light in the form of either glowing or a flame
  • In a complete combustion reaction, a compound reacts with oxygen, and the products are compounds of each element in the fuel with the oxidizing element
  • The substances which have low ignition temperatures and can easily catch fire are called “inflammable substances”
  • Complete combustion is almost impossible to achieve
  • Combustion is not necessarily favorable to the maximum degree of oxidation, and it can be temperature-dependent
  • The three necessary requirements for combustion are fuel, air and heat
  • To put off fire, water is poured on a substance which brings down it’s temperature and it is brought down below its ignition temperature
  • The job of a fire extinguisher is to cut off the supply of air, or to bring down the temperature of the fuel, or both

Applications of Combustion:

  • Combustion processes occur in many modern technologies such as power production, heating, automotive and aircraft engines and even explosion research
  • Application areas :
  • Fuel injection
  • Micro combustors
  • Rocket engineering
  • Reactor vessels in energy production
  • Exhaust control
  • Engineering of furnaces, burners & stoves

Question: Incomplete combustion of a hydrocarbon produces _____

a) Carbon dioxide
b) Water vapor
c) Carbon monoxide
D) all of the above

Correct answer: C