Types of Reactions

5. The reaction that occurs when a substance gains oxygen or loses hydrogen..
6. 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.
7. A reaction in which a single reactant is broken down into simpler products.
9. The substance that gets oxidised is also known as this.
13. A substance that increases or decreases the rate of a chemical reaction without being consumed itself.
14. The type of decomposition that occurs due to exposure to sunlight. This reaction occurs with compounds like silver chloride and silver bromide.
15. The type of decomposition that occurs due to supply of heat. This reaction occurs when hydrated ferrous sulphate crystals are heated.
16. Substance that undergo a chemical change. They are usually found towards the left of the arrow in a chemical equation.
17. The common name of the layer that is formed on iron when it is exposed to moisture and oxygen.
19. The reaction in which both reduction and oxidation occur.
20. A reaction in which heat energy is released into the surroundings.

1. A substance that inhibits or slows down oxidation.
2. The name of the insoluble solid that is formed during a precipitation reaction.
3. A reaction in which an insoluble salt is formed.
4. The type of decomposition that occurs due to passing of electricity through a compound.
5. The substance that gets reduced is also known as this.
8. A reaction in which heat energy is absorbed from the surroundings.
10. Chip packets are flushed with this gas to prevent the chips from becoming rancid.
11. Substance that is formed after a chemical change. They are usually found towards the right of the arrow in a chemical equation.
12. A reaction in which a highly reactive metal displaces/replaces a lesser reactive metal from its salt solution.
18. Gradual destruction of a metal when it is exposed to moisture, oxygen, acids, or certain gases in the atmosphere.