Starter.   <ul><li>What are hydrocarbons? </li></ul>
Alkanes.   Methane has one carbon.  Ethane has 2 carbons.  Propane has 3 carbons.  Butane has 4 carbons.
What is an Alkane? <ul><li>A family of hydrocarbons.  </li></ul>
Alkanes are made up of chains of carbon atoms surrounded by hydrogen atoms.   A carbon atom must have 4 bonds. Therefore i...
These are the products of what? +
Ethane + Oxygen +
Alkanes are usually gases.   CH 4  (g) Don’t forget state symbols.
Q: How do alkanes react with aqueous reagents?   A: They don’t!
Why is there no reaction? <ul><li>Because the C-C bonds and the C-H bonds are unreactive.  </li></ul>
Test your knowledge of Alkanes… <ul><li>What are alkanes? </li></ul><ul><li>Write the structural, molecular representation...
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Alkanes

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OCR 21st century chemistry
Module C7
Higher level pupils
Alkanes.
This covers everthingon the specification about alkanes other than balancing equations.

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Alkanes

  1. 1. Starter. <ul><li>What are hydrocarbons? </li></ul>
  2. 2. Alkanes. Methane has one carbon. Ethane has 2 carbons. Propane has 3 carbons. Butane has 4 carbons.
  3. 3. What is an Alkane? <ul><li>A family of hydrocarbons. </li></ul>
  4. 4. Alkanes are made up of chains of carbon atoms surrounded by hydrogen atoms. A carbon atom must have 4 bonds. Therefore it has 4 hydrogen bonds. The image above is methane as it has only 1 carbon atom.
  5. 5. These are the products of what? +
  6. 6. Ethane + Oxygen +
  7. 7. Alkanes are usually gases. CH 4 (g) Don’t forget state symbols.
  8. 8. Q: How do alkanes react with aqueous reagents? A: They don’t!
  9. 9. Why is there no reaction? <ul><li>Because the C-C bonds and the C-H bonds are unreactive. </li></ul>
  10. 10. Test your knowledge of Alkanes… <ul><li>What are alkanes? </li></ul><ul><li>Write the structural, molecular representations of all four alkanes. </li></ul><ul><li>What are the reactants of an Alkane and oxygen? </li></ul><ul><li>Why are alkanes unreactive? </li></ul>

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