TYPES OF CHEMICAL REACTIONS

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Across
  1. 4. The name of the process by which basic copper carbonate and silver sulphide is formed on copper and silver respectively.
  2. 6. A reaction in which an insoluble salt is formed.
  3. 7. The experimental setup with which the electrolysis of an electrolyte like water or brine is done.
  4. 9. The electrode that is connected to the negative terminal of the battery.
  5. 10. A common name for the compound which is formed from the combination of quicklime and water. It is also used for whitewashing walls.
  6. 12. A substance that inhibits or slows down oxidation.
  7. 14. A reaction in which an acid and base react to form a salt and water.
  8. 18. A reaction in which a single product is formed from two or more reactants.
  9. 19. Gradual destruction of a metal when it is exposed to moisture, oxygen, acids, or certain gases in the atmosphere.
  10. 21. The common name of the layer that is formed on iron when it is exposed to moisture and oxygen.
  11. 24. Substance that is formed after a chemical change. They are usually found towards the right of the arrow in a chemical equation.
  12. 27. The substance that gets oxidised is also known as this.
  13. 28. The type of decomposition that occurs due to supply of heat. This reaction occurs when hydrated ferrous sulphate crystals are heated.
  14. 30. Chip packets are flushed with this gas to prevent the chips from becoming rancid.
Down
  1. 1. A reaction in which a single reactant is broken down into simpler products.
  2. 2. A reaction in which a highly reactive metal displaces/replaces a lesser reactive metal from its salt solution.
  3. 3. Substance that undergo a chemical change. They are usually found towards the left of the arrow in a chemical equation.
  4. 5. The name of the insoluble solid that is formed during a precipitation reaction.
  5. 8. The type of decomposition that occurs due to passing of electricity through a compound.
  6. 9. A substance that increases or decreases the rate of a chemical reaction without being consumed itself.
  7. 11. A reaction in which heat energy is absorbed from the surroundings.
  8. 13. A reaction in which two reacting compounds exchange their ions in aqueous solutions.
  9. 15. The electrode that is connected to the positive terminal of the battery.
  10. 16. The oxidation of oil or fat containing food items when they are kept in the open for a long time, resulting in unpleasant odour or taste.
  11. 17. Compounds that contain molecules of water of crystallisation.
  12. 20. The substance that gets reduced is also known as this.
  13. 22. The reaction that occurs when a substance loses oxygen or gains hydrogen.
  14. 23. The type of decomposition that occurs due to exposure to sunlight. This reaction occurs with compounds like silver chloride and silver bromide.
  15. 25. The reaction in which both reduction and oxidation occur.
  16. 26. A reaction in which heat energy is released into the surroundings.
  17. 29. The reaction that occurs when a substance gains oxygen or loses hydrogen.