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Hydrocarbons and Crude oil
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Includes mind maps, questions and answers. Differences between complete and incomplete combustion of hydrocarbons. Types of Alkanes. Breaking down hydrocarbons (Cracking). Fractionating column, how it works and which products are produced.

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  • October 1, 2022
  • 4
  • 2022/2023
  • Interview
  • Unknown
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HelenJane

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Hydrocarbons and Crude Oil
Hydrocarbon - compounds that contain carbon and hydrogen only. Hydrocarbons are
saturated and have single bonds.

Crude oil
❖ Mixture of hydrocarbons.
❖ Contains molecules in which carbon atoms are chains or rings.
❖ Important source of useful substances
❖ A finite resource.

Alkanes
Alkanes react with excess oxygen to produce carbon dioxide and water.

Name Formula Boiling point (℃)

Methane CH4 -161

Ethane C2H6 -88

Propane C3H8 -42

Butane C4H10 -0.5

Pentane C5H12 36

Hexane C6H14 69

Heptane C7H16 98

Octane C8H18 126




The general formula for all Alkanes is CnH2n+2

Questions - Answers are on the last page.
Q1. Which of the Alkanes are gases at room temperature?
Q2. When Hydrogen burns it makes ………….
Q3. When Carbon burns it makes …………..
Q4. When hydrocarbons burn they make …………. and …………..
Q5. Write the symbol equation for the combustion of natural gas (methane) and balance it.
Q6. Octane is in petrol. Write the balanced symbol equation for the combustion of Octane
and Balance it.

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