Crude Oil

Crude Oil

mixture of different compounds
1. CO2 from burning fuels caused global warming
distillation can be used to seperate mixtures of liquids
Most of the compounds in crude oil are hydrocarbons
Crude oil is separated into fractions using fractional distillation
properties of each fraction depend on the size of the hydrocarbon molecules
fractions with lower boiling points are less viscous,more runny
1. burn more easily as they are flammable
  1. useful fuels
Burning hydrocarbons in plenty of air produces CO2 and H2O
1. In a limited amount of air may produce carbon monoxide and solid particles
2. Any sulfur compounds in the fuel burn to produce sulfur dioxide
  1. Oxides of nitrogen can be formed when fuels burn under extreme conditions
Sulfur dioxide and nitrogen oxides cause acid rain
Particulates cause global dimming
Pollutants can be removed from waste gases after fuel is burned
Sulfur can be removed from fuels before they are burned so less sulfur dioxide is given off
Biodiesel can be made from vegetable oils
1. Biofuels are a renewable energy source
  1. Can be used instead of fossil fuels
    1. Ethanol made from sugar is a biofuel
2. Carbon neutral
3. plants grown for biodiesel take up land
Hydrogen is a potential fuel for the future
1. Only produces water when burned
2. Produced from water by electrolosis- large amount of energy needed
3. Gas- takes up space, difficult to store in quantities

Resource summary

	Created by oliviabaines about 10 years ago