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How are coal, petroleum, and natural gas connected to carbon compounds?
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carbon group element
Modern version of the periodic table of the elements (printable).
Coal, petroleum, and natural gas are classified as fossil fuels and are fundamentally defined by their high content of carbon compounds. These substances are the result of geologic processes acting on the remains of ancient organic matter, such as plants and marine organisms, which originally captured carbon through photosynthesis.1234
The connection to carbon compounds is as follows:
- Coal: Formed from the accumulation of land plants, coal undergoes a process called coalification. As it is buried and subjected to heat and pressure, volatile compounds are expelled, causing the material to become progressively richer in carbon.156
- Petroleum: This fluid is a complex mixture of hydrocarbons, typically consisting of about 85 percent carbon and 15 percent hydrogen. It originates from the decomposition of marine organisms.1
- Natural Gas: Primarily composed of methane, natural gas is a hydrocarbon that can be generated alongside petroleum or from coal deposits.14
Because they are composed of these carbon-based molecules, these fuels serve as essential organic compounds used for energy.3