Alternative Fuel Cars

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Across
  1. 3. in the form of a gas
  2. 5. a connection between atoms that are joined together to form a molecule
  3. 6. the smalled units of an element
  4. 7. fuels that are different from those most commonly used today
  5. 9. devices that produce electricity by combining a fuel with oxygen
  6. 10. a chemical element in the periodic table
  7. 11. devices that convert light into electricity
  8. 12. fuel made from crops such as corn and sugar cane
Down
  1. 1. brightly shining
  2. 2. dirt or debris in the air or on the ground
  3. 4. a supply of something that can be replaced; a source of energy that is not depleted by use
  4. 5. living, or recently living, plant or animal material
  5. 8. the process by which a substance is broken down into a simpler form, such as in the creation of chees and vinegar