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