Petroleum and natural gas contain chemical energy . This energy is stored within the chemical bonds of the hydrocarbons (molecules made of hydrogen and carbon) that make up these fuels.

When we burn petroleum or natural gas, we break these bonds and release the stored energy as heat and light. This energy can be used to generate electricity, power vehicles, heat homes, and many other applications.

Hier is een uitsplitsing:

* Petroleum: Petroleum is a complex mixture of hydrocarbons, primarily composed of alkanes.

* Natural Gas: Natural gas is primarily composed of methane, the simplest hydrocarbon.

Both petroleum and natural gas are considered fossil fuels because they are formed from the remains of ancient organisms over millions of years.