Crude Oil and Fractional Distillation

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  • A fossil fuel is a fuel made underground over millions of years. e.g. coal, oil, natural gas.
  • Fossil fuels are non renewable
  • Oil is made from dead plants and animals
  • Coal is made from trees. Heat and pressure makes fossil fuels.Crude oil is not flammableonly some molecules are. Crude oil is a mixture of hydrocarbons (compounds made up of hydrogen and carbon)
  • The most useful hydrocarbons are short because they easily become a gas


The crude oil is heated before it enters the column. Some fractions have a very high boiling point and they are still liquids so they drop out of the bottom. They are thick molecules called residue. As you…


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