C1 fractional distillation 0.0 / 5 ? ScienceHydrocarbonsGCSEOCR Created by: GLUCreated on: 21-03-15 11:07 Q: is a crude oil a compound, mixture or element ? A: mixture (of hydrocarbons) 1 of 5 Q: how long did it take for crude oil to form ? 1- hundreds of years 2 - thousands of years 3- millions of years A: 3 - millions of years 2 of 5 Q: from what did crude oil form ? A: dead sea creatures, crushed slowly 3 of 5 Q: why is crude oil described as a "finite" resource ? A: it will run out (we're using it up faster than it can be formed naturally) 4 of 5 Q: crude oil contains sulphur (which can cause acid rain). Where did the sulphur come from ? A: it was present in the fats and protein molecules of the dead sea creatures that formed oil 5 of 5
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