TYPES OF CHEMICAL REACTION CHEMICAL CROSSFIRE

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Across
  1. 5. Zinc and Lead are more reactive elements than _________.
  2. 6. Copper gets covered with a _________ coating on exposure to the moist air .
  3. 7. A reaction in which when two or more substances combine to form a single product.
  4. 10. AB + C gives A + BC , which type of reaction is this .
  5. 13. Reaction that are opposite to Combination reactions.
  6. 14. Egg, chalk, marble, and this rock are made of calcium carbonate.
  7. 15. Substance that speeds up a chemical reaction without being consumed.
  8. 16. A reaction where there is gain of hydrogen and electrons .
  9. 20. Respiration is an example of which reaction in which energy is produced.
  10. 21. A substance “X” used in for whitewashing and to give a shiny finish to the walls .
Down
  1. 1. A Reaction when two compound exchange ions .
  2. 2. Substance that gains electrons and causes oxidation in a reaction.
  3. 3. Reactions in which insoluble salts is produced .
  4. 4. When Quick lime reacts with Water it forms.
  5. 8. A side where reduction occurs in the electrolysis of water .
  6. 9. When Lead nitrate reacts with Lead oxide in heat it gives out nitrogen dioxide and oxygen. What is the color of nitrogen dioxide fumes .
  7. 11. Reaction used in the black and white photography .
  8. 12. The reaction between acid and base to form salt and water .
  9. 17. Reaction in which energy is absorbed.
  10. 18. A reaction when Oxidation and Reduction reactions occur together it is known as ?
  11. 19. Ferrous Sulphate crystals lose water when _________.