Chem

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Across
  1. 1. What name is given to the reaction between iron and oxygen to produce iron oxide (orange in colour)?
  2. 4. The fire triangle consists of oxygen, heat and...
  3. 6. A greenhouse gas given off by burning fossil fuels.
  4. 8. What type of energy is released when you burn a fuel?
  5. 11. A type of reaction that involves a change of state only.
  6. 12. What flame colour does lithium produce?
  7. 13. When you add a glowing splint to this gas it relights.
  8. 14. What flame colour does lilac produce?
  9. 16. What name is given to the process of something changing from a solid to a liquid?
Down
  1. 2. A piece of equipment used for measuring temperature.
  2. 3. A type of reaction that results in a chemically different substance being produced.
  3. 5. Complete the word equation: fuel + oxygen --> carbon dioxide +
  4. 7. When you add a lit splint to this gas it goes squeaky pop.
  5. 9. A reaction that gives off heat is called.
  6. 10. What happens to limewater when you bubble carbon dioxide through it?
  7. 15. A reaction involving oxygen that gives off lots of heat energy.