Oil


 * Oil**

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 * Oil is a substance that is in a viscous liquid state at ambient temperature. Oil does not mix with water but mixes with other oils. Oils are either mineral oil or organic. Applications of oil includes cooking, fuelling, lubrication, painting etc. Properties of fuel differs on its application; jet fuels are only flammable when highly pressurised.
 * Oil is extracted from the ground by drilling or other means as crude oil or petroleum and refined after several stages for its specific use.


 * **Advantages** || **Disadvantages** ||
 * * Oil is one of the most abundant energy resources
 * Liquid form of oil makes it easy to transport and use
 * Oil has high heating value
 * Relatively inexpensive
 * No new technology needed to use || * Oil burning leads to carbon emissions
 * Finite resources (some disagree)
 * Oil recovery processes not efficient enough—technology needs to be developed to provide better yields
 * Oil drilling endangers the environment and ecosystesm
 * Oil transportation (by ship) can lead to spills, causing environmental and ecological damage (major oil spill near Spain in late Fall 2002)
 * Oil is flamable and can create dangerous accidents when ignited ||