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A pure oil of one chemical formula is not even a mixture. However most oils are mixtures of many oils, and sometimes substances that are not even oils. Also it makes a difference if you are talking vegetable oil, cooking oil, machine oil, crude oil, etc. For example a machine oil with either Teflon or graphite added is definitely a heterogeneous mixture.
Wiki User
∙ 12y ago
Wiki User
∙ 15y agoCrude Oil, or Petroleum is a mixture of hydrocarbons (Which have a homogeneous formula). The type and percentage of hydrocarbons depend on where the oil was extracted from. See http://en.wikipedia.org/wiki/Petroleum for more info.
Wiki User
∙ 8y agoNo, it is heterogeneous. Homogeneous mixtures are the same throughout and will not separate. Oil and vinegar will separate with the oil on top and the vinegar on the bottom so shake your dressing well before you put it in your salad.
Wiki User
∙ 13y agoNo, since oil and water separate from one another it is a heterogeneous mixture.
Wiki User
∙ 13y agoIf by oil you mean petroleum, it is a heterogeneous mixture.
Other types of oil may be mixtures or compounds.
Wiki User
∙ 8y agoYes.
Wiki User
∙ 13y agoYes
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