Chemistry revision

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Across
  1. 2. if you increase this, it means there is more surface to react on
  2. 6. Compound made up of Hydrogen and Carbon only
  3. 8. The process that put oxygen into our atmosphere
  4. 9. The column used to separate crude oil
  5. 11. Hydrocarbons with single covalent bonds
  6. 13. cylinder Used to measure a liquid
  7. 14. Converts large hydrocarbons into smaller more useful ones
  8. 16. Hydrocarbons with double covalent bonds
  9. 17. Gives particles energy to move around quicker
Down
  1. 1. Approx 80% in the earths atmosphere
  2. 3. Coal, oil and gas are examples of this
  3. 4. place Used for a reaction to take place in
  4. 5. Number of particles available to react
  5. 7. To make experiment more accurate you should do this.
  6. 10. What is the theory when particles collide and react together
  7. 12. A meeting point for a reaction that speeds it up
  8. 15. Approx 20% in the earths atmosphere