Question

What is chemical reaction ? What are its types.?

Answer 1

☞ Question

☆What is chemical reaction ? What are its types.?

☞ Answer

☆The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion. Analyzing the reactants and products of a given reaction will allow you to place it into one of these categories.

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Answer 2

A N S W E R

$\large{\underline{\sf{\red{Chemical~ Reaction:}}}}$

• The transformation of chemical substance into a new chemical substance by making and breaking of bonds between different atoms is known as Chemical Reaction.

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$\large{\underline {\sf{\red{Types~ of~ Chemical~ Reactions:}}}}$

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1. Combination reaction:

• Two or more compounds combine to form one compound.

• Example :- A + B $\longrightarrow$ AB

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2. Decomposition reaction

• The opposite of a combination reaction – a complex molecule breaks down to make simpler ones.
• Example:- AB $\longrightarrow$ A + B

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3. Precipitation Reaction

• Two solutions of soluble salts are mixed resulting in an insoluble solid (precipitate) forming.
• Example:- A + Soluble salt B $\longrightarrow$ Precipitate + soluble salt C

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4. Neutralization Reaction

• An acid and a base react with each other. Generally, the product of this reaction is a salt and water.
• Example:- Acid + Base $\longrightarrow$ Salt + Water

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5. Combustion reaction

• Oxygen combines with a compound to form carbon dioxide and water. These reactions are exothermic, meaning they give off heat.
• Example:- A + O2 $\longrightarrow$ H2O + CO2

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6. Displacement reaction

• One element takes place with another element in the compound.
• Example:- A + BC $\longrightarrow$ AC + B

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