Question

Write about different types of chemical ractions with eg

Answer 1

Answer:

1.Combination reaction : This happens when a compound is formed from its elements or from simpler substances .

2.Decomposition reaction : decomposition is normally caused by heating or passing electricity through it.

3. Single Displacement reaction : In this reaction , one element replaces another element from a compound . in general , a more reactive element replaces a less reactive element from its compound.

4. Double Displacement reaction : in this reaction , two compounds react by exchanging their groups.

5. Precipitation reaction : in this reaction , two compounds react in their aqueous solution state to form an insoluble product which appears in the form of a precipitate. (denoted by a down arrow)

6. Neutralization reaction : an acid reacts with a base to form salt and water

7. Oxidation reaction : it is a chemical reaction that involves addition of oxygen or removal of hydrogen from a substance. oxidizing agent is used.

8. Reduction reaction : reduction is a chemical reaction that involves addition of hydrogen or removal of oxygen from a substance.

Explanation:

Pattern :

1. A + B =>AB
2. AB =>A + B
3. A + BC => AC + B
4. AB + CD => AD + CB

Other reactions do not have a particular pattern