Chemical reactions and equations

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Across
  1. 1. product of electrolysis of water
  2. 4. Precipitation reactions produce insoluble ......
  3. 6. The process in which metals are eaten up by action of air, moisture
  4. 9. reaction in which substances combine to form a single product.
  5. 10. reaction used in black and white photography.
  6. 11. gain of oxygen or loss of hydrogen.
Down
  1. 2. Addition of hydrogen
  2. 3. substance that takes part in chemical reaction.
  3. 5. substance added to food containing fats and oil.
  4. 7. Reaction of water with quick lime.
  5. 8. Aerial oxidation of fats