Chemical Reactions

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Across
  1. 2. Neither an acid nor a base
  2. 3. the oxidation of of iron or steel to form a reddish brown oxide
  3. 5. a substance that changes colour in the presence of an acid or base
  4. 6. A chemical reaction that releases energy in the form of heat or light
  5. 10. A substance formed as a result of a chemical reaction
  6. 11. precipitation containing high levels of sulfuric and nitric acids
  7. 12. A scale that represents acidity or basicity of a solution
  8. 13. The gradual destruction of material by a chemical reaction with their environment
Down
  1. 1. A reaction between an acid and a base that produces water and salt
  2. 4. when a fuel reacts with oxygen to produce large amounts of heat quickly
  3. 6. A chemical reaction that absorbs energy in the form of heat
  4. 7. A substance present at the start of a chemical reaction
  5. 8. to coat metal with a protective layer of zinc
  6. 9. A chemical reaction in which an element combines with oxygen