Combustion

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Across
  1. 2. A substance that burns to release energy.
  2. 5. A gas used in fire extinguishers.
  3. 6. Another example of a fuel.
  4. 7. The gas needed for a fire to burn.
  5. 8. Used to get rid of the oxygen from a fire.
Down
  1. 1. A fuel we use in cars.
  2. 2. These can be used to stop a forest fire.
  3. 3. A frothy substance sometimes found in fire extinguishers.
  4. 4. A type of fuel made from hydrogen and carbon.