Question

Write about all the 4 types of chemical reactions definitions with 2 examples
for each type of reaction​

Answer 1

Explanation:

The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion.

Answer 2

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Decomposition Reactions

A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. The general form of a decomposition reaction is:

AB→A+B. (5.3.4)

Single-Replacement Reactions

A single-replacement reaction is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:

A+BC→AC+B. (5.3.8)

Double-Replacement Reactions

A double-replacement reaction is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is:

AB+CD→AD+CB. (5.3.12)

Combustion Reactions

A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. The combustion of hydrogen gas produces water vapor (see figure below).

$2H _{2}(g)+O _{2} (g)+2H _{2} O(g). \: \: \: (5.3.14)$

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