CHEMICAL REACTIONS

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Across
  1. 2. chemical reaction between metal in air/water in which the metal is 'eaten away'
  2. 3. another term for burning
  3. 5. chemical reaction in which an acid reacts with a base to produce water and a salt
  4. 7. change of state from liquid to gas
  5. 9. chemical reaction involving the combination of oxygen with a fuel to produce heat energy
  6. 11. re-ignition of a fire due to the introduction of oxygen
Down
  1. 1. solid formed during a chemical reaction making a solution appear cloudy
  2. 4. catalysts in living things are called ...................
  3. 6. the process of coating iron with zinc to protect it from rusting
  4. 8. this substance combines with iron to form rust
  5. 10. substance that contains a positive metal ion and a negative non-metal ion
  6. 12. substances which have a positive hydrogen ion