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Chemical reaction

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Chemical reaction

Posted by Ananya Raj 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years, 3 months ago

The new substances produced as a result of chemical reaction are called products.
The method of representing a chemical reaction with the help of symbols and formulae of substances involved in it is called a chemical equation.
A balanced chemical equation has an equal number of atoms of different elements in the reactants and products.
An unbalanced chemical equation has unequal number of atoms of one or more elements in the reactants and products.
Those reactions in which two or more substances combine to form a single substance is called a combination reaction.
Those reactions in which a compound splits up into two or more simpler substances is called a decomposition reaction.
Those reactions in which one element takes the place of another element in a compound, are known as displacement reactions.
Those reactions in which two compounds react by an exchange of ions to form two new compounds are called double displacement reactions.
Reactions which involve the addition of oxygen or the removal of hydrogen are called oxidation reactions.

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