Fossil fuels include coal natural gas and what

Fossil fuels include coal, oil and natural gas.

1) Coal is a mixture that contains mainly carbon.

(1) Coal is a mixture, mainly containing carbon.

(2) coal combustion heat, mainly carbon and oxygen reaction released.

(3) comprehensive utilization of coal: coal insulation air to enhance the thermal - chemical changes that can decompose coal into many useful substances, there are:

Coke: metallurgy, ironmaking, etc.

Coal gas: gaseous fuel. Its active ingredients are H2, CO, etc.

Peak oil: known as the "blood of industry".

(1) Petroleum is a mixture, mainly containing carbon and hydrogen.

(2) the refining of petroleum: petroleum by fractional distillation (the use of different boiling points) - physical changes, can get a variety of different products. For example: liquefied petroleum gas.

Natural gas (commonly known as methane, pit gas)

(1) the main component of natural gas is methane (CH4), methane is the simplest organic matter;

(2) the physical properties of methane: methane is a colorless, odorless gas, insoluble in water, density is smaller than that of air.

Chemical properties of methane: it is flammable, produces a bright blue flame when burned, and emits heat. Chemical equation:

CH4 + 2O2====CO2 + 2H2O

Methods: In the flame above the cover of a dry beaker, observe the beaker wall whether there are beads of water generated, if there are beads of water generated to prove that the combustible material contains hydrogen; quickly inverted the beaker over the beaker injected with a small amount of clarified lime water, oscillation, if the lime water becomes turbid to prove that contains carbon. (You can also cover the flame above a beaker with lime water on the inside).