Chemistry Revision

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Across
  1. 2. This speeds us a reaction
  2. 5. negative particle in an atom
  3. 7. Place where electrons move around
  4. 8. This breaks up a hydrocarbon into useful products
  5. 10. Increasing this speeds up particles
  6. 11. Neutral particle
  7. 12. Reactive metal with Symbol Na
Down
  1. 1. Hydrocarbon which is CH4
  2. 2. Increasing this gives more particles
  3. 3. Reactive non metal with Symbol F
  4. 4. Carbon has this many electrons in the outer shell
  5. 6. Hydrocarbon with a double bond
  6. 9. positive particle in an atom