viernes, 15 de marzo de 2013

Oil:for and against

Oil:for and against

An oil is any neutral, nonpolar chemical substance , that is a viscous liquid at ambient temperatures, and is immiscible with water but soluble in alcohols or ethers. Oils have a high carbon and hydrogen content and are usually flammable and slippery. Oils may be animal, vegetable, or petrochemical in origin, and may be volatile or non-volatile.


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