Fuels and Hydrocarbons

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Across
  1. 5. Compounds that have a double-bond in their structure are ___________.
  2. 6. A substance that speeds up a chemical reaction without being used up.
  3. 7. Hydrocarbons are made up of carbon and
  4. 10. Fossil fuels are ________ meaning they will run out.
  5. 11. Methane, ethane and propane are examples of this.
Down
  1. 1. Spraying water on a fire removes the ________ from the fire triangle
  2. 2. The solution used to test for saturation.
  3. 3. CH3CH2CH2CH2CH2CH3
  4. 4. The three main fossil fuels are oil, gas and
  5. 8. Element needed for fire to burn
  6. 9. Compounds with 1-4 carbon atoms have low __________ points.
  7. 10. A compound that has stored energy