Question

What are the 3 major types of chemical reactions?​

Answer 1

Answer:

The types of chemical reaction are:

Combination reaction.

Decomposition reaction.

Displacement reaction.

Double Displacement reaction.

Precipitation Reaction.

Explanation:

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Answer 2

Answer:

The main types of chemical reactions are - combination, decomposition, displacement, double displacement, and precipitation

Explanation:

The main types of chemical reactions are based on their functions and mechanisms.

• Combination reaction - 2 or more reactants combine to produce a single product.
  $A + B \rightarrow AB$
• Decomposition reaction - it is the exact opposite of combination reactions, where a single reactant decomposes to give 2 or more products.
  $AB \rightarrow A + B$
• Displacement reaction - here, there are 2 reactants (1 simple, and the other compound). The simple reactant displaces a part of the compound reactant, to produce a compound and simple product respectively.
  $A + CD \rightarrow AC + D$
• Double displacement reaction - it is a more complex version of a displacement reaction. here, there are 2 compound reactants, which displace each others' parts to form 2 other compound products.
  $AB + CD \rightarrow AC + BD$
• Precipitation reaction - like we can guess from the name, there is a process of precipitation here. In this reaction, 2 reactants react with each other, to form an insoluble product (and maybe, other by-products) that precipitates.
  $A + B \rightarrow AB \downarrow$

        We also note that the symbol of a precipitate is denoted by a downward arrow (↓).

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