CIE AS Chemistry (9701) exams from 2022

Revision Notes

3.1.1 Hydrocarbons & Alkanes

Hydrocarbons

  • Hydrocarbons are compounds that are made up of carbon (C) and hydrogen (H) atoms only

 

An Introduction to AS Level Organic Chemistry Hydrocarbons and Non-Hydrocarbon, downloadable AS & A Level Chemistry revision notes

The diagram shows examples of hydrocarbons; Ethanol is NOT a hydrocarbon as the molecule also contains an oxygen atom and is not solely made up of carbon and hydrogen

Exam Tip

Remember to state that hydrocarbons are ‘only’ made up of C and H atoms.

Alkanes

  • A functional group is an atom or a group of atoms in an organic molecule which determines the physical and chemical properties of the molecule
  • Alkanes are the simple hydrocarbons with no functional group
  • They are made up of carbon and hydrogen atoms bonded to each other with single covalent bonds

An Introduction to AS Level Organic Chemistry Alkanes, downloadable AS & A Level Chemistry revision notes

Alkanes are compounds made up of carbon and hydrogen atoms only and contain no functional group

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Fran has taught A level Chemistry in the UK for over 10 years. As head of science, she used her passion for education to drive improvement for staff and students, supporting them to achieve their full potential. Fran has also co-written science textbooks and worked as an examiner for UK exam boards.
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