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

2. Alkanes. Methane has one carbon. Ethane has 2 carbons. Propane has 3 carbons. Butane has 4 carbons.

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. These are the products of what? +

6. Ethane + Oxygen +

7. Alkanes are usually gases. CH 4 (g) Don’t forget state symbols.

8. Q: How do alkanes react with aqueous reagents? A: They don’t!