Gap-fill worksheet question Quiz "Crude Oil and its Fractional Distillation"

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   boiling points      carbon      condense      evaporating      fractional distillation      fractionating column      fractions      hydrocarbon      hydrocarbons      hydrogen      mixture      molecular formula      molecular structure      molecules      not      number      physical      separate      temperatures      unchanged   
(1) fdistoilGIF.gif Crude oil is a of a very large number of compounds.

(2) A consists of two or more elements or compounds chemically combined together.

(3) The chemical properties of each substance in the mixture are .

(4) It is possible to the substances in a mixture by methods including distillation.

(5) Most of the compounds in crude oil consist of made up of (H) and (C) atoms only which is why they are called .

(6) Alkane molecules can be represented in the following forms:
Image157.gif is a way of summarising the atoms in the molecule, and is called the .
Image207.gif is a way of showing the full .

(7) fractionQ.gifThe many hydrocarbons in crude oil may be separated into , each of which contains molecules with a similar of carbon atoms.

(8) This is done by the oil and allowing it to at a number of different because of their different

(9) This is done in a tall structure called a . and this method of separating the components of crude oil is called .

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