Crude oil is a subtance that contains hundreds of different hydrocarbons of different lengths.
Properties of Hydrocarbons found in Crude Oil:
As the hydrocarbon molecule gets bigger, the intermolecular forces increase, meaning that...
- The boiling point increases because the bigger molecules have a stronger force holding them together, so more heat is needed to break the bonds.
- The liquids become less volatile; the bigger it is, the slower it evaporates so it doesn't turn to gas as easiy as the smaller molecules.
- The liquids become more viscous (flow less easily).
- Bigger hydrocarbons burn less easily so they are less usful as fuels.
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