Fuel is any material capable of releasing energy when it changes or transforms its chemical structure. It involves the release of the energy of their potential to form a usable form (as a chemical reaction is called chemical energy). In general these are substances that burn, but there are exceptions which are explained below.
There are several types of fuel. Among the solid fuels including coal, wood and peat. The coal is burned in boilers to heat water that can vaporize a machine to move directly to produce steam or heat for use in thermal applications (heating). Peat and wood are mainly used for domestic heating and industrial, although the peat has been used for power generation and locomotives used wood as fuel were common in the past.
Among the fuel fluids are liquids such as diesel, kerosene or petrol (or gasoline) and gas as natural gas or liquefied petroleum gas (LPG), represented by propane and butane. Gasoline, diesel and gas to be used for internal combustion engines.
In the bodies of animals, the main fuel that consists of carbohydrates, lipids, proteins, which provide energy for muscle, growth and the processes of cell renewal and regeneration.
Also called combustible substances used to produce nuclear reactions in the fission process, when this process is not a proper combustion.
Nor is it as a fuel Hydrogen, when used to provide energy (and bulk) in the process of nuclear fusion, which atomically fuse two hydrogen atoms into one helium, with release of energy. This means to gain power has not yet been dominated by men (only in its most violent, the nuclear bomb hydrogen bomb known as H) but is common in the universe because it is the energy source of stars.
Fossil fuels are mixtures of organic compounds that are extracted from mineralized soil with the purpose of producing energy by combustion. The origin of these compounds are living things that died millions of years ago. Gas and Electric rates can be lowered as your energy supplier Fossil fuels are considered carbon from forests of the Carboniferous period, oil and natural gas from other agencies. Among the fuels used are butane gas, natural gas and diesel.