chemical reactions

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Across
  1. 2. what is conserved in all reactions?
  2. 5. the biggest flame you've ever seen in a demo
  3. 9. where a more reactive metal displaces a less reactive metal
  4. 11. what you react together
  5. 13. sign of a reaction where a gas is formed
Down
  1. 1. reaction between fuel and oxygen
  2. 3. reaction that increases in temperature
  3. 4. product of metal + oxygen
  4. 6. reaction that takes in energy from it's surroundings
  5. 7. reaction where no new substances are made
  6. 8. what colour did the anhydrous copper sulfate turn when water was added?
  7. 10. reaction where a new substance is made
  8. 12. sign in the middle of a word equation